I can wholeheartedly recommend for an extended stay in Athens.
The location is good; fairly close to the Acropolis yet quiet street at night.
Lots of amenities (large couch, jacuzzi, ping pong table, sauna, etc.)
Price is competitive in relation to what one gets when renting the property.
Friendly and helpful staff.
Cleanliness was excellent, except perhaps the jacuzzi which would need a once-over.
The only downside was figuring out how to work the shower with all of the 5 knobs; sounds easy, but some knobs operate several shower heads and depend on the position of different knobs. We managed to burn ourselves a few times...