We had a great stay at Kerem's hotel, it is in the most convenient location, within easy walking distance of the main attractions and with a view of the Blue Mosque from the roof terrace. It was very clean and tidy and the staff on reception are particularly helpful and very friendly. The breakfast on the roof terrace was a highlight and there was everything you could want for breakfast available, it really started the day off well. When we return to Istanbul, we will definitely stay at the Hotel Sultanahmet and would recommend it to all