Jw Marriott Hotel Istanbul Marmara Sea, IstanbulJw Marriott Hotel Istanbul Marmara Sea in Istanbul, Turkey has a corrected score of 4.1 ± 0.2 (fair evidence, 4 of 4 platforms), ranked 18 of 245 hotels we score in Istanbul. Its platform ratings, normalised to 0-5, average 4.3 before correction: Booking.com 4.2, Tripadvisor 5.0, Google 4.3, Agoda 3.7. Rooms from about $297 a night (cached, not a live quote).Opened in 2022, the JW Marriott Hotel Istanbul Marmara Sea is a five-star property located in the Bakırköy district. It overlooks the Marmara Sea and contains 204 guest rooms with modern interiors. The hotel serves both business travellers and event planners, as it features a large ballroom capable of hosting 600 guests. Facilities include a gym, sauna, and a seasonal outdoor infinity pool. Guests can choose between Turkish and Western breakfast options at the buffet. While the hotel offers extensive amenities and high service standards, the mandatory eco-rules mean room cleaning is an opt-in service rather than a standard daily occurrence.What stands out

Sea views from guest rooms

Large ballroom for events

Seasonal outdoor infinity pool

On-site spa and sauna

Watch out for

Cleaning is opt-in only

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