The appartement is very well located in the heart of old European Istanbul, few steps from sultanahmet "blue mousqe" and Hagia sofia. building and neighbourhood are old as you would expect when staying in sultanahmet, the area is a mix of locals and tourists "full of hotels and restaurants" and is very safe.
Appartement is very neat and clean with an amazing view of the golden horn just like in the pictures provided. We were a family with 3 kids and it was enough for all of us. We booked an airport pickup / drop off with the appartement which I highly recommend, for checkin we were late for about 2 hours in the airport due to missing luggage and
Nahide was so kind to wait for us at the building entrance. She gave us a quick introduction to the apartment and the area and provided us with an Istanbul Cart which we used later for public transportation. I would highly recommend this appartement for anyone who would like to experience life in old Istanbul. The only bad point I found about the appartement is the stairs, the apartment is in the 3rd floor and Nahide informed me that there is no elevator in advance, stairs are high and tight so be careful.