It's not so bad, BUT...
pictures are certainly demonstrate apartment at it's best, but in reality it is 30-40% different in my opinion.
Also from pictures it looks like the apartment is huge, but in reality it's not that big.
Also it is a walk up in the old building and there is a concern with the downstairs door - it closes but does not lock, and the apartment door can easily be opened by a thief (I raised that concern to both the host and airbnb). I hope the host finds a solution for it. Because I didnt feel safe leaving my valuable in the apartment.
Also the table was broken (other reviews said it also and it looks like the table was not fixed)
There was a pretty bad leak from the ceiling during our stay and it flooded the kitchen area with dirty water.
And the towels that hosts provided were not super good quality. I also suggested to invest in new towels for your guests.
But it is located in a very nice area of Istanbul and it does have that feeling that you are living in an old building and the view is great from the window and in the bedroom there is back yard (small one), but it's cute.
Communication with a host was ok, but when I presented the issues - hosts would not respond for some time - like the leak in the apartment was not fixed (but host said that it did later), but in reality it got worse. And when I asked for blankets (it was cold to sleep with just bedsheets as blankets) - host said "yeah, yeah will bring it soon" and never brought them.
So suggestion to a host treat your guests a bit with more urgency (we are paying) and fix up your apartment, which is a lovely apartment, but just needs some work.