Nice place to rest, relax and also near of the most cultural areas in Athens, practically you do not need to make much movements in public transport if you enjoy to walk and discover the awesome things that Athens offer historically.
Clean place, relaxing and I think is a excelent option considering price-quality relation.
I can totally recomend this Airbnb because of the things I had explained, the fast answer to your questions and in general the high communication level between owner and customer.