Great great location. Very close to Istiklal Street with all what it provides from cafes, restaurants, and all kinds of shops. The apartment is very clean as well and very comfy and cozy. Mustafa responds quick and is nice. Two things that one should consider when renting this apartment is that it is in the 4th floor and there is no elevator. Also since this is very close to istiklal street, street noise is something that you will have to get used to. It is lively for young adults, but was not so much for my parents.
I will definitely come back here again though. Great Istanbul experience.