The hotel is a proper 5 star with good service, good breakfast and great facilities like very big swimming pool, sauna and excellent spa, the massage I had was great. I liked the spacious very comfortable room with excellent views. Luxury bathroom with deep bath and sliding doors very 5 star style. I like the open style corridors in this hotel - balcony style Instead of a classic corridors very stylish and luxurious design of the hotel. Staff were very accommodating, when my aircon did not work well they called technical staff immediately and all was fixed in no time. Breakfast maybe not your classic European style but it’s very tasty and plenty to enjoy and healthy with lots of vegetable and eggs cooked fresh in front of you as you wish is a good touch: Taxi always available just outside the hotel doors and reception can arrange anything for you, they do try to make you feel very happy. Roof top restaurant must go place with fantastic views of the city and lovely food.

Not a lot to dislike, maybe just a price for single gin and tonic was surprisingly high £12

Thanks to Manager Ahmet we received a wonderful and tasty welcome 🤗 thank you for all ! During the stay we enjoyed the dishes of the restaurant and the Benedict eggs in the morning .The last ones can say that not in all European locations of Hyatt are available or at the quality of Regency Istanbul. Dishes in the restaurant are fresh( we tried Sushi too and it was very good)and we'll made according the level requested. Congratulations also for staff ,friendly , disposal and looking to have satisfied clients

Maybe for clients which are booking more than 1-2 nights to have better financial offers .

We had a really excellent stay here and we can highly recommend this hotel. From the warm reception at checkin to the beautiful views and very comfortable rooms, this is a great hotel. The indoor pool was fabulous and the gym is excellent. The steam room was perfect. Breakfast was outstanding in both the selection and service. Wish we had stayed longer.

We liked everything about the property. Note the location, which is excellent for the views of the Marmara Sea and nearby strolls along the coastline. It took us 45 minutes to get to and from the new airport. Several metro stops away from the tourist areas.

Excellent location, right on the sea. The view from the window is gorgeous. The staff is well-trained. Especial thanks to Mrs Gozde. She is always ready to solve any issue for you 24/7. The rooms are super design. The room has a safe, a mini bar. There is a bathtub and a shower room. There are all shower accessories, excellent quality towels. And there is also iron.

It is impossible to open the window to ventilate the room, the air conditioner does not provide such an opportunity. Also, the level of shampoo and conditioner in dispensers is not monitored. One of them finished on the second day.

Typical Hayatt style, great location (at the sea and on a direct line to the airport), well-maintained facilities, in general great price - to - value ratio. Staff is as good as it can get in Istanbul. Especially the two guys at the reception, Taylan and Haydur, should be noted for their efficiency and responsiveness. Their customer service skills and good command of English language, prove them definitely as a high-standard Hayatt material. Food in the restaurant is also of good quality.

No rooms with open windows (even the suites).

Facilities, breakfast, room furniture.

Location .. this is “two nights” hotel that you can take before leaving Istanbul, unless you like to stay in a quiet area.

Everything in the hotel was absolutely marvelous! Except for some unreasonable prices...

30€ for a breakfast per person is insanly unreasonable price. We really wanted to try the breakfast but I don't think that 60€ for a morning meal is a well calculated price. Especially when in Turkey you have so many different and delicious options for a much more reasonable price. If it was for a dinner or lunch, we would have paid even more. This ruined our experience a bit, but everything else was perfect .

Excellent stay just as usual in Hayat. Stuff is very friendly and helpful, we have solved all of the problem we have in no time. Most of the stuff speak excellent English so it was no problem with communication. Excellent food in the restaurant on the first floor, and the exceptional view in the restaurant on the 17th floor. Recommend to everybody how used to the comfortable stay in a good hotel. You have a free and secure parking lot for your car as well if you are traveling by car in Istanbul.

Everything was great. Especially the reception personnel Yusuf and Ruveyda for arranging the midnight airport pick up made us felt safe and welcomed on our first visit to Istanbul, Türkiye. They also gave Dinner reservation at Sea food restaurant including transportation. When we had problem for the room AC they upgraded us into better room with the AC temperature we wanted. Beside that they were so helpful and went above and beyond their job to make our stay comfortable and memorable. We definitely will come back there. Special thanks to Ruveyda for recommending us to sign u p for the World of Hyatt membership. Even though we have many times staying in Hyatt/Grand Hyatt hotel, nobody offered us this loyalty program. Thank you

The AC temperature was to hot for us and the technician coming to fix it unfortunately still didn't work. The next day we got our room upgraded. Thanks

Location, away from city noise, overlooking the calm sea. Easy taxi availability. The rooftop bar and restaurant were amazing! Enjoyed the live music and excellent food and service with views across the city !

I prefer the quieter areas to stay in so I enjoyed being here. Required transport to get to all of the tourist sites, not walking distance to the old city, although it can be done if one is keen.