We've rented this house several times over the past years and intend to keep doing so!
The bedrooms are spacious, bright, and clean and there is plenty of communal space to hang out - including a fully equipped kitchen (although with an amazing neighborhood bakery across the street and many nearby restaurants, not much cooking was done.)
In addition to the house itself, the location can't be beat -- right in the middle of the historic district, a couple of minutes walk to the Metro, and within easy walking distance to most of the ancient sites - including the Acropolis, the Agora, Kerameikos, Hadrian's Library, etc. And, some of Athens' most trendy and happening neighborhoods are all within easy walking distance (Monastiraki, Plaka, Psyrri, Gazi, Metaxourgeio, Aghia Irini).
What's really wonderful is that despite it's incredibly central location, it's on a very quiet neighborhood-y street which makes it quiet and restful.
We'll be back!