The address is quite easy to find and the room was very clean. I also want to thank Osman for his hospitality. BTW, if you can wake up in the early hours of the morning, the landscape of the room was wonderful. And as mentioned in the introduction of the house, the street was very quiet and peaceful. Thus, I can advice Osman's house as a good stop for ones who will visit İstanbul for a couple of days and looking for a comfortable place.