We had a wonderful time at Orestis' place. Orestis welcomed us personally at the metro station when we arrived and walked us to the apartment giving some tips along the way. The metro stop is 3 minutes away and we were able to easily get to the ferry port from there as well. The apartment itself was beautiful and had everything that we needed (and more). It really is a 5/10 minute walk to the Acropolis museum (and therefore pretty much the acropolis itself as well). I would definitely recommend the apartment, it contributed to our great stay in Athens.