We had a great time in Ozan's apartment. The unit was tastefully decorated, and I exceptionally liked the artwork. The apartment is located near all the touristic hubs (only a few steps from the popular Istiklal street. If you are a light sleeper, however, you might want to bring earplugs, as there is a nightclub four stories down the apartment. Also, be aware of the fact that the unit is on the fourth floor, with no elevator and a very narrow, round staircase. My husband and I had been traveling for two weeks when we went to Istanbul and Ozan's place, so we had two heavy luggages with us. We had to ask for outside help to assist with our luggage.
All in all, I recommend Ozan's place if it is your first time in Istanbul and you like to be close to all the touristic hubs.