Keiran's place is in a perfect location to explore the best of Istanbul. The apartment is stylish, clean and cozy with everything you need. As a host, he's very responsive and offered some great suggestions for things to do.
There is live music that happens on the roof a few nights a week and the windows don't block any sound from the street (people talking in the street before / after the shows are actually louder than the music upstairs), but it was usually quiet by midnight so it didn't affect us too much.
But for the price and location, this was perfect for our stay. Would definitely recommend a stay here if you want a local's experience of Istanbul.