I spent a little over a week at Yusuf's while finishing classes at Bogazici. Overall I found I got what I paid for: a nice large room and accommodating host. Visitors should know that Yusuf's flatmates occasionally did smoke inside, but Yusuf's room was odor free and well ventilated, so it was no problem for me. Overall, I was very pleased by the room -- and especially by its proximity to the university!