It was really a superb stay at the Appartement, the location is really perfect and it just takes 10 min to walk to the Hagia Sophia. Also the Check-In was very nice, there were several people showing us around in the Appartement and preparing our beds.
Also the entire time Selim was super helpful, he booked the airport transfers for our group and that really helped a lot!
So all in all, I can highly recommend this Appartement!