Absolutely fantastic place and host! Clean all the time, quiet, warm and comfortable, perfect for rest after work, studying and location could not be better, every store or bus station you will need is in a range of 50-100m. The coast line with parks and excellent gym is 10 min away with bus and city center is, for Istanbul standards, relatively close and easy to go to. Utku is truly great as a host and a person, friendly, full of respect, great to communicate with and responding immediately to messages and questions. He was extremely helpful, by translating and explaining many hacks about transportation, currency, buying and everything else you need to know in order to manage in Istanbul. He also recommended excellent breakfast places and accompanied whenever he had time.
Huge recommendation, and many thanks to Utku for making this stay a home with a friend.
P.S. Combination of floor heating and very soft carpets was amazing.