We loved our stay here (family of 4 including 2 kids in mid-late teens).
The location is amazing. A few minutes uphill climb to the metro (one stop to Taksim square); A few minutes downhill walk to the tram (gets you to Sultanahmet/Old Europe areas for Blue Mosque, Hagia Sophia, Topkapi palace, Spice/Grand Bazaars etc). A few minutes walk to Galata tower and Istiklal Caddesi. Many eclectic retail outlets in the midst of a residential district (eg., one of our kids attended a 3 hours arts workshop). A coffee shop and convenience store right opposite the house complete the picture.
The home itself is nice and eclectic. Well stocked Kitchen; washer+dryer made our stay comfortable.
Zehra is a wonderful host. She communicated proactively and provided us with good info if any specific need arose.
Overall, a very pleasant and enjoyable holiday.