Everything was great. Room is comfortable, bathroom very clean. I didn't use the kitchen, but it looked very well maintained. The location is excellent; the apartment is only a few minutes walk away from a major metro station and the Kadıköy ferry and bus terminal, so it is very easy to get to and from the European parts of Istanbul and Sabiha Gökçen Airport. Kadıköy itself is small and pretty much everything you'll want to see is walking distance.