We stayed here for 6 nights in February. A great cozy place with an unforgettable highway. The staff are lovely. If you are fast asleep, then definitely choose this place. It's quiet all around, but the neighbors are very audible, although it didn't bother us. Everyone also tried to be quiet at the specified time.
If you are not chasing comfort and have a limited budget for a short period of time, then it is quite okay to spend the night a couple of times. Pleasant, friendly staff, clean, fresh bed linen. There is no sound insulation, so you can hear what conversations the neighbors are having from all sides. I do not recommend using shower gel and shampoo. If you are going to Istanbul for a long time, it is better to take a place in a new city.