Unfortunately, the appartment is listed as "private house/apartment" but i found myself sharing the apartment with the host. She is very friendly and tries to make you feel at home, but I do think that there IS INFORMATION MISSING in the add and it can be very dissapointing! As i found out that she was sleeping in the living room at 11 pm at night when i reached "home" after being all day out, i just accepted it, since i had nowhere else to go and i only had 48 hs in Istambul, didn´t want to spend them changing appartments!
Overall, the apartment is nice, there is a huge hill to reach the appartment and it´s a 3rd floor by stairs, but a very nice view of the Bosphorous and if it were a privite flat i would definately stay there again.
But bear in mind all her things are there (clothe, food, etc) as she lives there!