I stayed in Esen's flat for five nights at the end of 2013. First of all, the location is excellent - a four-minute walk from the Metro and pretty close to Taksim and the ferries. Esen's place is comfortable and complete with all the modern conveniences. Most importantly, Esen is a fantastic house. He really goes out of his way to make you feel like not just a valued guest, but a friend. He prepared filling breakfasts each morning and suggested a long list of things to do. As I was there during New Year's, he even recommended some special events in his neighborhood. I wholeheartedly recommend Esen.