We spent two nights at Margie and Socrates's place. The apartment is well located in the nice area of Thisio, at 5 minutes from the metro station where you have a great view on the Acropole.
The flat is nice, convenient and perfect for a short stay. You are close to the historical center, the Acropole and the main attractions of the city.
Margie and Socrates are perfect hosts, they gave us great advices to visit the city and good names of local restautants. We really enjoy our stay in Athens.