Gianna's place was great! It was very close to the historical sites, and near many restaurants and shops. The apartment was very clean and tidy, and Gianna was always offering help and suggestions for things to do and places to see.
The only difficulty we had was finding the apartment. The address given on the profile brings you to a spot a few blocks away and across the highway. But I think that may have been a problem with the navigation app we were using.
I highly suggest this place for a short or long term stay in Athens!