The location couldn' t be better if you want to see the historical sites of Istanbul:
Hippodrome is literally just around the corner, Hagia Sophia, Blue Mosque and Topkapi can br reached within some minutes on foot. Plenty of restaurants and some supermarkets wihtin walking distance as well.
Fehmi was a great host: rapid communication, transfer from airport has been arranged, deposit of luggage after checkout was available. Very friendly contact person at the house could give assistance.
I enjoyed my stay there very much and would definitely go there again.