I had a room for one night and it was a pleasant experience. The hosts were extremely kind and helpful, open to any question. I particularly liked to location of the building, you enter directly through the central market, it´s very central and in a beautiful lively neighbourhood. Of course, the flat has many rooms, so it can be a bit noisy at times, but especially if you are traveling by yourself I guess it could be a place to mingle with likeminded people at the terrace with great view. Nice hostel quality with simple rooms and very clean in the middle of Athens.