Great location! Definitely one of the best neighborhoods in Istanbul.
Apartment is roomy and quite comfortable. It might be a bit too loud for some in the living room, because the street from the side of the room is very crowded, but it was fine for me and my friends. And the host was planning to change the windows in the living room what will solve the issue. And when it is cold outside it's getting chilly inside the apartment. It's possible to solve this with heaters but you'll have to pay some extra for the electricity. The rest was perfect.
Definitely would stay there again.