Perfect location.
Parking spaces easily found nerby (not common in Istanbul).
The apartment fits 6 people (three bedrooms) and the two terraces are very spacious and perfect for a little gathering.
Only slight inconvenience is the fact that when you want to shower, you must pass through one of the bedrooms. (the toilet though is on the hallway).
Also, the place was very clean and Yusuf was a great host.