Kimkim Trip Reviews

Effortless Switzerland

Overall the trip was exceedingly well planned and the hotel accommodations and in-country travel were excellent. The van drivers were all very helpful, punctual and patient, even when we were delayed getting into the country upon arrival. We loved our hotels and they were ideally located with great services. The tours that were booked provided the right level of engagement and relaxation. I would also like to call out Grizzy the guide who accompanied us on our hiking trip to Lauterbrunnen. She was an exceptional guide in that we had two very different goals. Part of our group wanted a very easy stroll why my sons wanted to do more strenuous hiking. She was able to satisfy both our needs with ease. She was very knowledgeable but not overbearing and provided information far beyond what we needed for the day. She's a treasure!

The other pleasant surprise was the "Fondue in a Backpack". I had moderate expectations for this and thought the whole idea to be a bit trite. However, it turned out to be one of the memorable events as we had very good fondue along the shores of Lake Thunersee on a beautiful summer day in Interlaken.

This was the first time my family traveled with a child (one-year old) but the quality of the accommodations and the thoroughness in transportation planning made it very stress free. I would recommend Kimkim to my friends because of the in-country support you have while traveling and the local insight our travel agents provided while we planned the trip.

Thank you, Brent

Activity Review

Hike in Lauterbrunnen!

Switzerland

Grizzy the guide was amazingly helpful. Of all the guides I have had in managing small and large groups, She is one of the best!

Quality of Experience

Guides, Drivers and Staff

Transport

At the end of the day, anyone can book a hotel or a train ride pretty easily, what really matters though is when something goes wrong. Or flight was cancelled from the US, I contacted KimKim agents and they worked to rebook things for me while I slept. I woke up the next morning with changes to my trip which made the whole thing easier. We enjoyed the recommendations and reservations they made for tours. They have very specific directions for using public transport. Quite frankly, I'd happily use then again.

Hotel Reviews

Skagen Harbour Hotel

Skagen

We wound up staying in one of their cottages versus the hotel itself. The cottage was good. It was 3 bedrooms, 1.5 bathrooms.

Authenticity & Character

Location

Staff

Cleanliness & Comfort

Villa Copenhagen

Copenhagen

Beautiful hotel with wonderful services. It was right next to the Tivoli and train station

Authenticity & Character

Location

Staff

Cleanliness & Comfort

Activity Reviews

Private 2-Hour Tour — Copenhagen, Your Way

Copenhagen

I've never ridden an e bike. It was pretty easy if you know how to ride a bike in general. It was like someone giving you a gentle push. The tour guide, Sergio, was great and easy to keep up with

Quality of Experience

Guides, Drivers and Staff

Transport

Hygge Tour Copenhagen

Copenhagen

I like Michelle. The tour was informational and pretty easy walking with lots of stops.

Quality of Experience

Guides, Drivers and Staff

I absolutely love KimKim! I've used them to plan two trips so far, and I'll definitely continue using them in the future. They tailor each itinerary to fit your budget and make the planning process incredibly easy.
During the trip, they're quick to respond to any questions or concerns, and they're always accommodating if any last-minute requests or changes come up. Their customer service is outstanding, and they truly go above and beyond to make sure you have a great experience.
I highly recommend KimKim to anyone looking for a stress-free, personalized travel planning experience!

Nuestra calificación para el viaje que nos diseñaste es un 10, la máxima posible. Fue un viaje lleno de belleza, disfrutamos de las principales atracciones con comodidad, no tuvimos que hacer largas filas para visitar sitios como las Tre Cime o Tofana di Rozes, y todas las indicaciones que nos dieron fueron sumamente útiles. El Hotel Pontechiesa fue otro acierto: gente muy amable y dispuesta, y las condiciones eran estupendas (nuestra habitación tenía jacuzzi!).

This is the first time we used Kim Kim and would use them again. Jose Luis, Anderson and Eddie were the best tour guides in all of Colombia. The drivers were also great, arriving on time and staying close by so after our tours we would be ready for our next adventure. In Bogota we saw the Boltero museum, Gold Museum , Salt Cathedral and the City Center , all were interesting and would recommend when visiting Bogota. While traveling through Medellin we saw Communa 13, Flower Tour, Coffee Tour and the Lake Overlook/rock hike, it was great. Each experience was vastly different from the others and we all enjoyed of Medellin. We ended our trip in Cartagena with a food tour which was delicious. We went to the beach sunset drumming ritual which we all chose as one of our favorite experiences . Our last morning we did the city tour including the castle which was a great way to end our trip. I appreciated all the hotels chosen for us, they were clean, safe and had breakfast included in our stay. There were a couple of times I had to communicate with the trip organizers via WhatsApp and they were quick to respond. We needed two in country flights arranged for us and the boarding passes were sent to us and it was well organized. Michael and his team were attentive to all details which was appreciated. I could not have planned a trip like this on my own, their expertise was invaluable.

All our guides were wonderful. Hana in particular gave us such a wonderful and in depth tour in Asakusa, a market and introduction to Shibuya. Our favorite activities were tea ceremony, dinner with the Geico, and our night at the hot springs hotel in Hakone. All of our hotels were pleasant stays with easy access to stations for getting to activities. We appreciated the WhatsApp chat to ask questions and receive assistance along the way. It eased our planning to have someone take care of the train tickets and help us figure out how to navigate the Shinkansen system. We had a wonderful trip!

Activity Reviews

Best of Shibuya Food Tour

Tokyo

Quality of Experience

Guides, Drivers and Staff

Transport

Experience Old and Nostalgic Tokyo: Yanaka Walking Tour

Tokyo

Miyuki was a great guide and we enjoyed Yanaka.

Quality of Experience

Guides, Drivers and Staff

Transport

Kyoto Arashiyama Bamboo forest & Garden Half-Day Walking Tour

Kyoto

Quality of Experience

Food

Guides, Drivers and Staff

Transport

Relaxing Evening: Private Onsen and Kaiseki Dinner

Hakone

Quality of Experience

Guides, Drivers and Staff

Transport

Welcome to Hakone!

Hakone

We enjoyed Hakone! We spent our afternoon at the open air museum, which was incredible. The stay at our hotel springs hotel was very unique and special: the location, the room, the hot springs, and the meals were all lovely.

Quality of Experience

Guides, Drivers and Staff

Transport

Osaka Local Foodie Walking Tour in Dotonbori and Shinsekai

Japan

Rio was a lovely guide. She was pleasant and gave us a lovely experience to take in a food experience at a slower pace and truly relax and enjoy foods.

Quality of Experience

Guides, Drivers and Staff

Transport

Tea Ceremony in Kyoto (Private)

Japan

This was so special. We learned so much and loved making matcha for each other. Our instructor was so patient with us as we learned and helped us understand and gave us a wonderful experience. Highly recommend!

Quality of Experience

Guides, Drivers and Staff

Transport

Dinner with Maiko in a Traditional Kyoto Style Restaurant Tour (Small Group)

Kyoto

This was an incredible, special, once in a lifetime experience. We loved it and highly recommend it.

Quality of Experience

Food

Guides, Drivers and Staff

Transport

Crowd-Free Kyoto: Fushimi Inari, Nijo Castle & Kinkaku-ji

Kyoto

Tom was an enthusiastic and informative guide. We saw interesting sites and he helped guide us and teach us in the best ways. He took the time to understand our knowledge and interests and adapted to make sure he was giving us the best experience. Highly recommend!

Quality of Experience

Guides, Drivers and Staff

Transport

Tokyo Early Morning Tour: Asakusa, Tsukiji Market, Meiji Shrine & Shibuya Crossing

Tokyo

Hana was an amazing guide! This tour is a must-do. We learned so much from her, she set a pace and covered a manageable amount of activities. She helped us find the best and most local foods to sample at the market. This trip was fantastic!

Quality of Experience

Guides, Drivers and Staff

Transport

Chris was an amazing host in the planning stages, execution and support during the trip. Highly recommend.

Luka planned our trip to Iceland to celebrate my son’s high school graduation and it was fabulous! We enjoyed the planned activities and stops, as well as the suggested extra stops. Our hotels were clean, cozy and comfortable. I did not know much about Iceland, but with the careful planning from Luka, we had no problems navigating and every activity was memorable and fun. My husband and I have three kids(11, 15, and 18) and we all had so much fun!

We completed a 12 day tour of Sri Lanka through the KimKim platform and can report an overwhelmingly positive experience. The booking process was easy and Dhanushka, the local specialist, was very attentive and helpful and provided many other options to craft a holiday that suited our group of 8 adults. He kept in touch throughout our time in Sri Lanka to ensure that things were going well.
We were met at the airport by our tour leader, Ajith, who was both our guide and driver throughout the trip. Ajith was a delightful person to spend the holiday with and provided many other options and experiences through the trip other than just the itinerary. He was helpful and pleasant at all times and provided use with a wealth of information about Sri Lankan culture, history, food and the plants and animals we saw. We appreciated his safe driving through the apparent chaos of the roads of Sri Lanka.
We highly recommend a holiday in Sri Lanka and feel after 12 days we have only just scratched the surface of all the country has to offer. We were met with kindness and a great sense of humour from all those we met. We are grateful for the experience that Dhanushka and Ajith provided and recommend them very highly.

Our itinerary was just right for us, and the hotels you chose for us were all great! We loved touring the villages nearby, and you helped insure there were no major travel issues. Thank you!

Our tour guides and driver were very friendly and personal. We felt well taken care of, our guide Esmeralda in Cusco and Roy in Macchu Pichu were very knowledgeable, great for helping with family pictures. Our driver Ramiro was very helpful and friendly.

Our family just returned from an unforgettable 11-day trip through Provence, the French Riviera, and Paris, and I can't say enough good things about working with Liz and her team.

From the moment we landed until the day we flew home, every detail was thoughtfully planned. We traveled from Aix-en-Provence to Nice and then on to Paris, with a perfect mix of guided experiences, free time, and seamless transportation. Every day brought a new adventure, from exploring the stunning Calanques by boat, wandering through charming villages, and seeing the breathtaking lavender fields in Provence, to snorkeling in the crystal-clear waters off the Lérins Islands, visiting Monaco and Èze, touring the Louvre, and ending with an evening cruise on the Seine.

The lavender fields were every bit as beautiful as I had imagined, but if I had to choose a favorite destination, it would absolutely be **Nice**. The colorful Old Town, the Mediterranean coastline, the beach clubs, and the relaxed Riviera atmosphere was amazing!

One of the things I appreciated most was having the **Team France** support while we were traveling. Their app made communication incredibly easy, and it was so reassuring to know that if we had a question or needed assistance, someone was just a message away. They responded quickly and handled every little detail, allowing us to simply enjoy our vacation.

Planning a trip for five adults with trains, private transfers, hotels, and multiple tours could have been overwhelming, but Liz made it feel effortless. Everything flowed beautifully, and we were able to focus on making memories instead of worrying about logistics.

If you're considering a trip to France, I highly recommend working with Liz. She created a vacation that was full of unforgettable experiences, beautiful scenery, and just the right balance of adventure and relaxation. It truly was a trip we'll remember for a lifetime.

Activity Reviews

Private Louvre Museum Visit

Paris

Felix knows his history and brought the art alive with his stories. Def worth having a guide.

Quality of Experience

Guides, Drivers and Staff

Felix knows his history and is a great story teller.

Private Summer Provence Lavender & Gorges du Verdon Day Trip

Aix-en-Provence

We had a wonderful day with our guide!

Quality of Experience

Guides, Drivers and Staff

Transport

Eric did an amazing job structuring our trip!!

Activity Reviews

Mega Zipline tour

Iceland

Quality of Experience

Guides, Drivers and Staff

Transport

Husavik Whale Watching

Iceland

Quality of Experience

Guides, Drivers and Staff

Transport

Jokulsarlon glacier lagoon zodiac boat tour

Iceland

Quality of Experience

Guides, Drivers and Staff

Transport

This trip was by far one of the best I've ever been on. Audrey was the reason why. We took our grandson on a trip for his graduation and we're looking for things that he would enjoy and she help in every part possible.

Will be using her again soon.

We had a wonderful time and Norway is a very special place to visit.

I am sorry that we did not schedule a zoom call with Taylor prior to departure to tweak final details. I do think it would have been very helpful. We left the US on June 25 and did not begin our KimKim portion until July 5. In our communication, this did not get conveyed well. The video Taylor provided did help but a zoom call would have been better. We also should have reviewed KimKim's recommendations closer prior to departure to confirm that they suited us.

The KimKim app is excellent! User friendly and wonderful to have all tickets and vouchers easily accessible.

KimKim's communication is also superb- they respond to text messages and emails quickly and their responses were clear and helpful.

Hotel Reviews

Radisson Blu Airport Hotel, Oslo Gardemoen

Gardemoen

It was a perfect choice for us. We like to be at the airport the night prior to departure. It was a short walk to the international terminal.

Authenticity & Character

Location

It was at the airport

Staff

The receptionists

Cleanliness & Comfort

The bedroom

Home Hotel Bryggen

Bergen

The hotel was in a great location. The staff- friendly, professional and helpful. It was clean and met our needs. There were many tour groups with us at the hotel. A more elegant, boutique-type hotel would have been our preference. Breakfast and dinner were provided. The breakfast was excellent and the dinner- we did not realize was part of the package so a bonus. It was a buffet and nothing exceptional, but it served its purpose well.

Authenticity & Character

The traditional Norwegian look

Location

It is in the center of the old section, directly across from the harbor

Staff

The waitresses

Cleanliness & Comfort

Activity Reviews

Food & Culture Walk

Bergen

The tour guide was genuine and passionate about Bergen. The tour was food and culture, but we expected more history of the area as we walked. The fish market and small restaurants on the tour were great, and the selection of food tastings- excellent. Restaurant in the Fish Market that tour guide recommended and it was excellent: Fjellskal

Quality of Experience

Food tastings

Guides, Drivers and Staff

The tour guides authenticity

Transport

Enjoyed the walk!

Fløibanen Funicular Ride

Bergen

It is a great view of the city at the top! We did not eat at the restaurant at the top but we heard good things about the quality.

Quality of Experience

There are great children activities at the top- petting zoo with goats, playground, troll structures, etc. It is a great place for families to visit.

Self-Guided Bergen Exploration

Bergen

We enjoyed our self-guided exploration. We walked up to the summit of Mount Floyd and rode the funicular (known as the Floibanen) down. We also walked around Bryggen, the wharf and the fish market and ended the morning with a hotdog from Hungry Dog.

Quality of Experience

The city center is very walkable and enjoyable.

Depart Norway

Norway

Norway in a Nutshell Sogenfjord Route: Ferry and train rides from Bergen to Oslo Central Station was stunning and an absolute must! It is a very long day. We wish we would have broken up into 2 days and stayed one night along the way- perhaps at Balestrand or Flam. Flam was very busy with many tourists and cruise ships The Flam train- definitely plan to sit on right side for the views. There are also no reserved seats so get in line early. The Kjosfossen Waterfall- beautiful and definitely worth getting off train to see. Bike riding from Myrdal to Flam would have been a fun activity to include. While visiting Flam, there is luggage storage at the tourist center. The train ride from Myrdal to Oslo- very enjoyable and loved the views along the way. Driver from train station to Oslo airport- professional and enjoyed the conversation.

Quality of Experience

The views of the fjords

Fjord Cruise to Rosendal

Bergen

It was a long day, and we should have researched more. We only had 3 1/2 hours in Rosendale. The tours of the barony and garden did not line up with our time there- we had to select one. There was not enough time to visit the church or to take a hike to the waterfall. Next time, I would plan to spend the night in one of the lovely hotels available. I would also want to explore the National Park. And if time was a concern, I would skip this activity and spend an extra day on the Sogneford Route.

Quality of Experience

spend the night or delete from itinerary

Excellent trip through four stops in Croatia. All of the transportation and guides provided were excellent. The hotels were also exactly what we were looking for. Nikola was very responsive, answered all of our questions and provided us with a detailed plan for the next day each evening. I would highly recommend.

Hotel Reviews

Hotel More

Dubrovnik

Beautiful hotel.

Authenticity & Character

Location

Staff

Cleanliness & Comfort

Korcula Hill

Korčula

A bit out of town but was very nice to have the space and the laundry capability.

Authenticity & Character

Location

Staff

Cleanliness & Comfort

Adriana Hvar Spa Hotel

Hvar

Beautiful hotel in a nice location. Only 4 stars because of the really odd placement of the bathrooms in the middle of the room with all glass walls. This doesn't work well for siblings or friends in a room together. Breakfast was excellent.

Authenticity & Character

Location

Staff

Cleanliness & Comfort

Villa Harmony

Split

Authenticity & Character

Location

Staff

Cleanliness & Comfort

Activity Reviews

Sea Kayak Tour on Korčula

Korčula

The Sea Kayak Tour on Korčula was really nice. Our guide was attentive and did a great job managing the group, which included another family with younger kids. He made sure everyone kept up and took breaks, offering wine and pastries during stops. The weather was perfect that day, making the kayaking experience enjoyable and not too challenging.

Gourmet Experience at Local Winery

Croatia

The Gourmet Experience at a Local Winery was a bit disappointing. The food was not what we expected, especially given the heat and the time spent there after a hike. The menu was not ideal, featuring hot soup and risotto, which felt heavy in the heat. Additionally, the service was disrupted when the server had a bloody nose and disappeared for a while, leaving our guide to serve the rest of the meal. Overall, it felt like the experience fell apart a bit.

Elafiti Islands - Private Half Day Speedboat Tour

Dubrovnik

The Elafiti Islands Private Half Day Speedboat Tour was a lot of fun. It was a great way to explore the area, and I would definitely recommend it. The experience was smooth and enjoyable with no issues.

Private Island of Hvar Cycling Tour With Lunch/ Dinner

Croatia

The Private Island of Hvar Cycling Tour with lunch was fantastic. It took us to the backside of the island, away from the usual party scene, which was beautiful and less crowded. The guides, Gorham who drove us and JJ who led the bike ride, were both very entertaining and knowledgeable. Although it was a very hot day, the experience was enjoyable and the scenery stunning. Lunch was included, and while there was some initial confusion about ordering, Nikola was very responsive and helpful in clarifying things. Overall, I would highly recommend this activity.

Private Day Trip to Krka National Park & Šibenik

Croatia

The national park was great and Ivana was also excellent. The lunch at the winery was ok. It was very hot out and the food was very hot soup and risotto and not much else and it took a long time and Ivana ended up having to serve lunch because the waitress became ill. Overall it was a very nice day and we really liked Ivana.

Quality of Experience

Guides, Drivers and Staff

Transport

Excellent trip from start to finish! Everything went exactly as planned, and every company we worked with was outstanding. The accommodations, tours, and private transfers all exceeded our expectations. Thank you for making our vacation so seamless and memorable!

Our family just returned from an unforgettable 12-day trip to Italy, and I honestly can’t recommend KimKim enough—especially our travel specialist, Valeria.

From the very beginning, Valeria took the time to truly understand what we were looking for and created an itinerary that perfectly balanced the iconic highlights with time to slow down, relax, and experience Italy at our own pace. Traveling as a family of five with kids ranging from teenagers to an adult isn’t always easy, but every detail was thoughtfully planned and tailored to our family.

Throughout the entire trip, everything ran incredibly smoothly. Every private driver was punctual and professional, every guide was knowledgeable, personable, and passionate about sharing the history and culture of their city, and every transfer and tour was seamless. We never had to worry about logistics, which allowed us to simply enjoy being together and fully immerse ourselves in the experience.

A special thank you to Anna, who was always quick to respond and incredibly helpful behind the scenes, and to our on-the-ground concierge, Marina. Knowing Marina was just a message away gave us so much peace of mind. Whether we had a question or needed assistance, we always felt completely supported and genuinely cared for.

Some of our favorite memories included biking through the Tuscan countryside, exploring Florence, experiencing the Vatican and the Colosseum with exceptional private guides, wandering the charming streets of Trastevere, visiting Pompeii, and ending our trip along the breathtaking Amalfi Coast. Every guide brought history to life in a way that made each destination so much more meaningful than if we had explored on our own.

What impressed me most was how effortless the entire trip felt. Even after an unexpected travel delay getting to Italy, everything continued to run smoothly. The communication, organization, and attention to detail never missed a beat. We always felt like someone was looking out for us, and that level of service is invaluable when traveling abroad.

If you’re considering using KimKim, don’t hesitate. And if you have the opportunity to work with Valeria, consider yourself lucky. She is thoughtful, organized, responsive, and genuinely passionate about creating unforgettable travel experiences.

This was truly one of the best family vacations we’ve ever taken, and so much of that is thanks to Valeria and the incredible team she assembled. Anna, Marina, our outstanding guides, professional drivers, and everyone involved worked together to make this trip feel effortless from start to finish. We came home with memories we’ll cherish forever, and we will absolutely use KimKim again and recommend them wholeheartedly to our family and friends.

Activity Reviews

Private tour of Pompeii

Italy

Quality of Experience

Guides, Drivers and Staff

Transport

Private golf cart tour

Italy

Quality of Experience

Guides, Drivers and Staff

Transport

Free day in Rapallo

Rapallo

Quality of Experience

Guides, Drivers and Staff

Transport

Ischia and Procida boat tour from Sorrento

Italy

Quality of Experience

Food

Guides, Drivers and Staff

Transport

Train transfer Rome/Sorrento with 2h guided tour in Pompeii

Italy

Quality of Experience

Food

Guides, Drivers and Staff

Transport

Private Colosseum, Forum Tour & Palatine hill

Rome

Quality of Experience

Guides, Drivers and Staff

Transport

Private tour of the Vatican Museums, Sistine chapel and Saint Peter's Basilica

Rome

Quality of Experience

Guides, Drivers and Staff

Transport

Private e-bike tour in the Tuscany Countryside with wine tasting and Tuscan lunch

Italy

Quality of Experience

Food

Guides, Drivers and Staff

Transport

Florence and Accademia City Tour

Italy

Quality of Experience

Guides, Drivers and Staff

Transport

Tom planned an amazing trip for our family. We enjoyed a combination of guided walking tours as well as boat and train rides both solo and with a guide at times. We had time to explore on our own as well. Tom was very responsive and attentive to any questions or concerns. Thank you!

Martina did an excellent job listening to my needs (I have trouble walking) and guiding me on what cities would work/be difficult. She made sure I had transfers and rooms without stairs as best she could before she went on maternity leave. When/if she is back, I highly recommend her! Just be careful once you are on the trip as different people help you and are not as understanding/accommodating as Martina

Hotel Review

Salvadonica - Borgo del Chianti

San Casciano in Val di pesa

The best meal we ate in all of Italy was the cooking class meal we had here! Such a fun experience as well as delicious. Unfortunately, I’m not sure what to say about the restaurant though as our first night’s dinner was so salty neither of us could finish our meals. It made me want to cancel the second night’s meal , but I’m glad we didn’t as the second night’s dinner was delicious. Comfortable rooms and a lovely swimming pool was very relaxing. Gravel walkways to some of the rooms, so if you have trouble walking, select a room carefully

Authenticity & Character

Location

Relaxing and scenic location

Staff

Cleanliness & Comfort

Activity Reviews

Meeting Venice: boat cruise along the canals

Venice

It was nice to have a private boat tour, but we were in one of the taxi boats which are partially enclosed. It’s tricky for those with physical problems to get to the opened back or it’s a little crowded to stay up front with driver. But we did get a very knowledgeable tour guide who went out of the way to make sure we went by something that is special to me.

Quality of Experience

Guides, Drivers and Staff

Transport

Driver went out of his way to accommodate me, but the boats aren’t really built for sightseeing

Paper marbling workshop with a local artisan

Florence

It was so nice to do something a little different, yet also very authentic

Quality of Experience

Guides, Drivers and Staff

Rooftop bar Opera show

Rome

Such a nice unique experience!

Quality of Experience

Guides, Drivers and Staff

Transport

Florence Golf Cart Tour

Florence

They no longer allow golf carts in the heart of Florence, so we did Fiesole. There were nice views, but the main museum was closed. Went to alternate museum that was very small and not well air conditioned. I’d skip this golf cart tour. There were nice views on way up to Fiesole, but not really worth it

Quality of Experience

Guides, Drivers and Staff

Transport

Small group golf cart tour of Rome's highlights

Rome

Great experience, particularly if you can’t walk well or are in Rome during a heat wave.

Quality of Experience

Guides, Drivers and Staff

Transport

The openness of the golf carts make it easy to see, but only on the side you are sitting on. Try to get the seat behind the driver

Tuscan Traditional Cooking Class

Italy

Best meal we had in all of Italy!

Quality of Experience

Guides, Drivers and Staff

Flavors of Emilia: Food Valley Tour

Italy

We loved this tour! Only suggestion is to cut down on the a,punt of food or spread it out over a longer period of time

Quality of Experience

Food

Guides, Drivers and Staff

Transport

Bologna Market & Food Tour

Bologna

Quality of Experience

Food

Guides, Drivers and Staff