I had a short stay at the room. It's located right at the heart of Athens, but unlike previous places I stayed at in and around the center, it was very quite. A lot going on during the day (and night) in the streets, but no noise is noticed. Maybe because it's in the fifth floor.
The room is quite small, also the bathroom but it has a nice balcony and if you aren't into staying inside, it won't bother you. And why would you stay inside in Athens?
Overall a good deal. I paid less in Athens in the past, but there was a big trade off. In this case I didn't feel ripped off at all.