Athens is wonderful, and this is a low-cost place to stay relatively near to the original Olympic track. Konstantina was a wonderful host
The apartment is near to some nice restaurants, but a fair walk from most of the attractions in Athens.
We loved the weekend, but the feedback we gave to the hosts was that the apartment was scruffy and should be improved, in particular the bathroom and the kitchen. Also, that the descriptions and the photo lead you to believe that it is in a better state of repair than it actually is.
Nevertheless if you want a low-cost apartment in Athens this might still be what you want.