Behlül's apartment is very close to Taksim square, in the heart of Beyoglu. Even though the neighborhood is full of life with cafes, bars and supermarkets, the street in front of the place is rather quiet.
The apartment itself is well equipped (from the kitchen and the bathroom to the internet connection) and there is always hot water available, along with heating (or air conditioner for the hot days). It is also very safe, as it has a security door, so being at the ground floor is not a problem. There are two minor issues, firstly it gets a bit noisy whenever someone uses the stairs and secondly the fact that there is only one window facing the street, which means that the room isn't very sunny. Again, minor issues.
Finally, Behlül is very kind and answers really quick to messages, he has been a lovely host.