I was not happy with my stay at all. It was three of us, and the room was ready only for two. Then I had to run around and get sheets, blanket and pillow for me. And to make the bed for the third person. While I was doing that I was quite disappointed by the cleanliness around (stains on sofa, hair from previous guest, dust). On the other hand I have to say that location is great right in the middle of Galata next to the tower and Ömer was very communicative and always there answering my issues (which there were just too many). I am an experienced host myself and travel extensively therefore I can compare.
I would not stay here again and do not recommend you to.