Great location just down the hill from busy Istiklal Cd (Street.) Very clean, very nice studio. Place is perfect for someone wanting a central location and doesn't need a kitchen. It has mini fridge to keep things cold and the A/C worked very well. I enjoyed my stay here very much and would easily return here when I get back to Istanbul.
Others mentioned the kids being noisy. There is a school next door and they were playing basketball on weekdays, but it didn't bother me one bit. I was able to sleep just fine. I did hear it, but it wasn't disruptive. Just sounded like kids enjoying recess time at school.