Cinar was wonderful. He fit us in at the last minute after our first Airbnb turned out to be filthy. His place was super clean and big enough for 3 adults and 2 toddlers.
It is up 4 flights of stairs (no elevator), but that is really the only negative. It's in a great neighborhood, with easy walking to Galata Tower, Istiklal street, the tram, and the ferry to Kadikoy.
Highly recommend.