Overall I am satisfied with the listing.
Unfortunately the place was not ready when I arrived and some cleaning still had to be done. It was a nice gesture to offer me a free breakfast as a compensation. Both Ertan and his colleague were very helpful and responded quick.
The location is great (if you want to be close to Taksim) but be aware it is noisy outside and if you are a light sleeper it might keep you up at night.
At the end I would like recommend this place, mainly if you are traveling alone and you are looking for a place to sleep.