The studio is perfect for 1 or 2 people. We loved the location.. only a few minutes walk from Istiklal and all the great cafes there. We also enjoyed the 2TRY fresh orange juices from the mini markets just downstairs.
Fatih was great. Very responsive in correspondence before and during our trip. He helped us to feel welcome and gave us a nice overview of the city and arranged rides as necessary.
The only negative thing I would say about it is that there isn't hardly any noise insulation from the room upstairs (it sounded like a heard of elephants walking around when there were people up there) or from the street (where people would often talk...loudly until midnight or so). But I'm not sure that any of the other places in the area would be any better. At least it wasn't on a busy street.