It was one of my best airbnb experiences so far. The apartment has everything you need in it. There are a lot of interesting details like pictures, and books, and small things which you can explore. I fell in love with all the plans in the apt - they add some forest touch though you are staying in the center of Istanbul.
Dev is a very sweet and helpful host. I'd say the best one I've met so far!
So I would definitely recommend this apt for your comfortable staying in Istanbul