This apartment is in a fantastic location if you want to explore Istanbul. You might want to read Memories and the City by Orhan Pamuk.
Rooms are spacious and full of light, the beds are super comfortable. The apartment is normally quiet except when someone throws a party in the adjacent courtyard.
We had a good flow of information, getting in and checking out was smooth. The hosts were always helpful. We had a great time even though the weather was terrible. :)