We stayed there for a week with my family (6 people total). It was a comfortable stay. Cihan was very responsive and helpful. Although there were some stuff missing intitially (like washing tablets), he kindly provided us whatever we needed. The concierge of the building were very friendly and helpful as well. The place is very close (10 min) to Taksim square which is a popular tourist spot, though the street in which the building is was very steep :D but manageable.
Overall we were very satisfied with our stay