Overall it was nice trip to Istanbul. The place is good designed and looks exactly as on the pictures. Owner was very nice and always was ready to help with questions.

There are few moments that was not so good:
1) Wifi was really slow. It was definitely not 70mb (maybe at the night only). I was not able to use it for videoconferencing or even watch some videos.
2) There is a lot of noise (loud music, people) from the street up to 2am (on Monday-Tuesday too). Owner provided earplugs, but it was very hard to sleep anyway.
3) There is no hot water in kitchen / sink. So, the hot water come from heater and only for shower. So, it was really cold to wash hands or wash the dish.