This is perfect spot to stay en Athens. The neighborhood is very quiet, but the location is perfect because you are at a short walking distance from all the landmarks and hot spots of the city as the Acropolis, National Gardens, nice bars and restaurants, and most of the cool neighborhoods, both touristic and locals.
The apartment itself is very nice, recently uplifted, with a nice hot tub directly looking at the Partenon.
Yannis and Tax have been also very responsive, quickly clearing any doubt and giving good recommendations.
I really recommend this apartment in Athens.