It is really a great place to stay in. Balat is a very lovely neighborhood with lots of character, cafes and good restaurants. The apartment was lovely and nicely decorated. It was equipped with the essentials that you need for your stay. The washing machine was broken during my stay but Mustafa was great with helping me getting my clothes washed. The roof terrace had an amazing view of the neighborhood and the Golden Horn. Caroline, although I didn't meet her personally, was very responsive to messages and extremely helpful. I'd definitely recommend this place for a real Istanbul experience.