I stayed few days in this apartment. The arrival and contact with the host was efficient and clear, he explained how things work in the flat and that was enough for starting our weekend.
Probably the best thing about this flat is it's location, which is just across the big street and few minutes away from all the lively Istanbul area. The flat is quite small, basic with simple facilities, but enough for 2 people to stay for few days.
Few weaker sides of the flat:
As the house is a bit old, the sound insulation is quite bad, I could hear very well what the neighbors are doing and what is happening in the street as well.
Bathroom might be better and actually needs some major refurbishing and the whole apartment has a smell due to smoking, but it was written in the listing that smoking is allowed so I kind of expected that.