We had a great time. The apartment was spotless, affordable and very comfortable. Centrally located and you are able to walk to all of the major sites and nightlife. Efi & Anna were very quick to answer any questions and were very helpful with suggestions. They also arranged for a driver to pick us up at the airport and take us to the apartment.
I would definitely recommend Efi & Anna's place to anyone looking for a place to stay in Athens.