It was a really good experience to stay in Ismail's flat! The location is very good and central, you are always in the center of all the sightseeing! An amazing rooftop is a great opportunity to have a big view of the city both in day and night. It was great to spent our morning with coffee on the rooftop to chill with the city view. The flat is also good. It's not a big one, but quite comfortable. The only thing that I can mention is the weird smell in the flat, maybe it's because of some household chemicals, anyway, its better to investigate why the smell is there. I would recommend this apartment and the host for your stay in the center of Istanbul!