Mehmet is a great host, he is friendly, and extremely responsive. And does his best to help his guest.
The place is clean, quiet, and has all the basic amenities needed for a stay. It is located in a quiet, and safe neighborhood and literally a 5 min walk to Ayasofiya (Hagia Sofiya). Lots of good restaurants and shopping within a short walk of the apartment.
A couple of quick points worth considering, which I didn’t know before:
The place is located in Sultanahmet, it is literally next to Topkapi palace grounds and right behind Ayasofiya. So if your only intention is to stay around Fatih/Sultanahmet, then it’s great. But note that you are in a corner of the area, and 10-15 min walk from the Sultanahmet tram stop, and it’s a somewhat of a hilly area with cobbled stone street. So it’s a hike, and inconvenient to have to make this walk every morning and night, to get to other places in the city.