Unfortunately, it was a bad experience for me. I booked for three nights, but I left the apartment after 2 nights and moved to a hotel. In the beginning it's not two rooms, the description must be accurate, the apartment is one room with a three single beds and one double bed, they separated by a wardrobe. It is true that its location is close to the important turisme places but It is issolated so I felt that I'm outside of the Istanbul world.
We were greeted by a worker at a nearby hotel. He provided us with the door code. We asked him about the possibility of changing it, and he said no. The next day there was someone else who knew the secret code. These are called the owner's friends. I do not know if you will be satisfied with your property in an unguarded building and know the key to your room more than one person?
So far I do not know the owner of the apartment, I only know his phone number and every time I call him sends me one of his friends as he calls them, I think they are workers in neighboring hotels.