I stayed in that accommodation for 1 week and it was really good. The location is perfect, you will stay in the centre of Istanbul near takism and other important places. Also the cleanliness was ok, maybe not the same standard as in Middle Europe, but it’s definitely acceptable. The only little bad thing is, that the walls are really thin so you will hear a lot, but If you have a good sleep, it’s not a big problem. Sabri is a really nice host, who helps you, if you have some questions.