This was a perfect apartment. It was spacious enough for 3 people, with two separate bedrooms. The location is great, in the middle of a cosy street with some bars, and next to the main street in Kadiköy with loads of restaurant, and close to ferry and metro stations. The neighbourhood is lively, but the bedrooms are very quiet. The apartment itself is very nice and clean, generally nice to stay in (felt like home). The shower was a bit slow to drain, but that was very minor and really the only negative thing I can think of.
Serdar was very helpful and quick in his communication, even though our booking was very last minute.