With a friend we spent one week in the appartment. It was great! The appartment looks like in the pictures, it is very cosy. The bed is comfortable and there is a ventilator which was very useful. The kitchen is well equiped, and the bathroom is nice. Very good location close to the tram/metro, and at the center of the "New Istanbul" (2min from the main street, 5min from Galata tower).
Fatih was an amazing host! He took time the day of our arrival to show us on a map where to go, he gave us suggestions for restaurants...and answered all our questions on the city. It was very useful. He was also available when needed (he gave us some powder for the washing machine).
Thanks you very much Fatih for the stay. We had a incredible experience in Istanbul! Thanks for your help and hosting us.