The stay in the blue room was great! Christos was very welcoming, explained the area of Athen to us and showed us local restaurants and marked. The kitchen is well equipped and tidy as well as the bathroom. The beds are very comfortable and the room is nice and quiet. The metro station is a 10 min walk away. Right around the corner is a beautiful small square with a lot of restaurants and a wonderful ambience.
I recommend staying there if you don't mind sharing kitchen and bathroom.