We stayed in Mustafa's flat for two weeks while exploring Istanbul. The location is wonderful — it's very close to the centre (only about 15 minutes walk), but still quiet and peaceful. The building itself feels safe and secure, and the flat is comfortable and has everything you could possibly need — it really felt like home. We especially liked the furniture and decor, and the big windows! Mustafa was very responsive whenever we had any small problems, and we felt very welcomed by him. I hope we'll be back soon.