Like other reviews have noted, this apartment is in great location. It's within walking distance to everything: the Acropolis, center of town that is built around the Acropolis. It's also near the center of Psyrri neighborhood which is lovely at night (I highly recommend checking this out). The apartment is spacious, extremely clean, modern, comfortable and very well equipped. The additional half bath was great. ACs worked very well. The balcony with side-view of the Acropolis was very nice. We really enjoyed our stay. This was the best Airbnb unit we've stayed in so far.
The only concern we had was the three levels of locking/unlocking of doors required to get the in and out of the unit (gate, building, apartment). You need to unlock the building and gate to get in AND OUT. In case of emergency, one could potentially be trapped in the building. It's not a fault of the apartment since it was how it was built, but this may be a concern for some if you're the type worry about those things. We figured if a fire were to break out, the best way to escape was to jump from the balcony using the very fashionable curtains as ropes :)