We stayed in Bahri's place for about a week. He and his family were very kind and helpful, and were always available to us (communication is easy since they live one floor down). The apartment is beautiful and well-equipped, and the view from the terrace is absolutely stunning! -- note that it is located on the fifth floor, which would be challenging if you're traveling with a baby and stroller, as we did. (still doable though!)
We loved the neighborhood, and the location is good -- there are several playgrounds in walking distance, and Uskudar's shopping mall is a couple of bus stations away. We were traveling for work, so please see other reviews for info on sight seeing :-)
overall, we had a great stay!