One of the best Airbnb experiences I've ever had! Parvin is truly a superhost - very fast to respond, speaks English and Russian, answered any of our questions or requests instantly. Also, because of his "mistake" he gave us a two-bedroom apartment with a balcony instead of a simple one that we booked :) Also helped us with a transfer to the airport which at 6AM can be an issue in that part of the city.
Location - as mentioned by other guests - be ready for some steep uphill walking whenever you go out. But that's cool because the apartment is located in the very heart of the old city, 10 minutes walk to Sultanahmet square and other attractions. 7 minutes walk to T1 tram stop which can take you to subway and the rest of the city. There are a lot of different places to eat for any budget.
11/10 recommend