We had some trouble finding the right address, because the house number is 5 instead of number 12/5. The check-in and out where flawless. Personally, I found the EUR 15 for check-in after 18.00 a bit strange. I this is after 23.00 it would make more sense.
The Apartment was nice. It was clean enough. Not so big but perfectly fine for 3 nights.
The neighborhood is the best one in Istanbul. Many nice bars, Shops and Restaurants close by, but it is not so touristic compared to the other side of the bridge. (which is a good Thing)