We didn't have the opportunity to meet Χρήστος personally, because he was out of Greece the days we were there, Anyway he took care to organize our check in and everything else was easy. The room is large, with tv and AC and has a nice balcony. The road below is not trafficated and we didn't have problems of noise even sleeping with the open window. The Area around is quiet, there is a nice square very close, with a lot of cafes and a good taverna. It is easy to move around both with the metro and buses which are running on the main road 3 minutes walking. What else? The price is like an hostel but you sleep in a private room with a double bed!! for us super recommended!
Exarchia, very interesting neighborhood, is in a walking distance...