The biggest advantage of this flat is a location: 10-15 mins walking and you're near Hagia Sophia, 5 mins walking and you're in Laleli; you can find cafes, shops and etc. in less than 100 meters from your door.
May be I missed it, but the apartment is located on the basement floor. Anyway, value for a price is awesome.
Barbaros is a super host. We noticed that the fridge was broken and he replaced it in 12 hours with a new one.