On our recent trip to Athens, J and I decided that we wanted to take advantage of beach views yet be close to Athens. Faliro is a coastal suburb of Athens that is easily reached by taking the number 4 tram from central Athens to the Flisvos stop (it takes about 20 minutes). Faliro boasts beaches, numerous cafes, restaurants, and the Flisvos marina to catch ferries to nearby islands. I found the area to be incredibly relaxing (just what I needed) and I enjoyed seeing a not touristy area.
Though cafes and bakeries were abundant, it was a bit difficult to find restaurants that served sit-down Greek meals (there is a burger joint). One of the restaurants that we found and really enjoyed was Taverna to Faleraki (on Afrodites 43 and Ag. Alexandroi* - not sure if my phonetic spelling with English letters is exact - sorry it has been a while since Greek School!).
Had it been warmer out, I'd have been living on that sandy beach in the photos below. I feel like Flisvos would be a perfect city break, particularly during warm months.
If you are interested in staying in Faliro I'd suggest checking out this amazing AirBnB.
*The name of the restaurant and address in Greek:
How do you feel about staying outside of major cities?