As many other guests have pointed out, the only good thing about this place is its location, which is central to Istanbul; however, I would like to point out the following concerns for other guests:
1- The entrance smells really bad. you have to walk a long curvy stairs through a dark small alley to the first floor to take a very tiny and slow elevator (without a proper air conditioning) to upper floors.
2- Floor matts in the bathrooms were really dirty and might have not been washed for a few months.
4- While posting says there is a safe box, there was not, or at least, I couldn't find it.
5- There was no bath tub (posting says there is a bathtub).
6- The handheld shower was broken.
7- The water was gathering in the shower, i.e. the shower wasn't draining properly.
8- While AirBnB mentions that if there is a surveillance or security camera or other recording devices in or around a listing, even if they're not turned on or hooked up, the guests should be notified; at the last day of my stay, I noticed there is a tiny object, similar to a camera attached to the bottom of the TV in the living room!
9- Finally, I forgot to take a canvas painting, placed in a tube and wrapped in a plastic container. I contacted the host, and respectfully asked him if I can ask someone to pick it up, but he stopped communicating and didn't respond to my question properly.