Perfect location and a perfect host. Mesut was great to communicate with (fast and very flexible). The apartment is great, too. No frills but everything you need is there and very comfortable. The views of the tower are wonderful and the apartment stayed very cool. It's also quite large so there's plenty of space.
One thing I loved was the apartment had seasonings, cooking oil, laundry soap, dishwashing soap, etc. So many times places don't include these basics so it was nice that Mesut provided them. Overall, I'd stay here again the next time I'm in Istanbul!