We had a wonderfull weekend in Istanbul and the positive experience was partly due to our stay at Deniz house hotel of Alihan. We had a spacious room with a small terrace overlooking the Bosphorrus. The hotel was clean and we were welcomed in a friendly manner. We were served a tasty breakfast. The blue mosque and Hagia Sophya were within a 5 minute walking distance. A lot of nice cafes and restaurants are around the corner of the hotel, but don't visit DoyDoy-restaurant as the manager may advise. They might have a nice roof terrace, but the food is disappointing, even as the ambiance.