Fatih was a great host: he met us and walked us to the apartment. He was happy to show us around the neighborhood a bit. He is proud of his city and wants his guests to see the best side of Istanbul. He's readily available for questions and support and called us to make sure we had airport transport arrangements.
The apartment is within walking distance (and public transport if your feet wear out) to the majority of the tourist attractions---Taksim is a hop skip and jump away, the Galata neighborhood is cute and Sultanhamet is just across Galata bridge.
While we thoroughly enjoyed our stay, the upstairs neighbors were pretty loud, so if you're a finicky sleeper you might want to look at Fatih's other properties.