The place is a carefully renovated house in four floors. The location, Balat, is an upcoming area. Part fancy, but mostly shabby chic. You’ll need buses or taxis to get around to the sights. It’s easy, but always a hassle to figure out how it works.
The house has all you can ask for. Very much like the pictures.
I would like to stay at Özkans place next time I’m in Istanbul as well.