Simply superb. Spacious apartment with unforgettable views to see all Athens, and particularly the famous Acropolis. And with all needed amenities.
Very quite neighbohood, one needs a taxi to come and go out, it is about 5 to 7 Euro to reach all Athens centre areas, like Plaka, Syntagma and Monastriki.
I can't think of any drawbacks, I would revisit with no doubt.