My girlfriend and me had a wonderful stay in the apartment. It was my first time using airbnb so i wasn't quite sure what to expect. Fortunately the apartment looks as great in real as it looks like on the pictures. The A/C easily got us through 7 hot days of sunshine, the wi-fi internet was helpful in checking our way, the kitchen was very useful with waking up with turkish coffee and the balcony has a priceless view. Apparently the neighbourhood is one of the best places to stay in Istanbul as many tourist attractions are within a walking distance and the nightlife is just around the corner though the apartment is located in a quiet side street.
If i come back to Istanbul (which i am sure will be happening again very soon) Bilgehans apartment will be my first choice to stay.