The stay was really great I can not complain about anything ,3 weeks I spent in Istanbul pass unfortunately too fast that's the unique complain I might have :)
The flat is located in very center of Kadiköy next to all services and transportations easy to be reach from Sabiha gökce Havalimani as well as from Istanbul Avrupali main airport.
The host was very kind and flexible ( especially regarding check in time as my flight from East Turkey arrived quite late ) and offer all help .I would highly recommend