The apartment exceeded my expectation indeed. It is very well equipped, looks charming and is perfectly located right in the heart of Sultanahmed, 3 minutes by foot to the attractions near the hippodrom. The apartment has floor heating, which works very very well when once heated up. I recommend to ask to switch on a night before your arrival.
Pick up from and to airport worked without any problem and I particularly liked the quick communication with the landlord, Nahide, which facilitated the whole booking procedure very much. A clear recommendation!