Orhan is the perfect host. He's friendly, kind and always available. I spent two months with him and we've developed a good friendship thanks to our chatting and debating in his beautiful living room.
And the apartment is perfct as well: big, warm, well-equiped, quiet and with a super location in the centre of Kadıköy, which is a pretty cool neighbourhood. You cannot find a better solution than this.
I am sure that when I go back to Istanbul, I'll stay at his place!