We stayed at Aris's place in Athens recently and we had a wonderful experience. Aris is very gracious host and was very responsive in communication. Aris arranged for a taxi for us from and to the airport. Aris also arranged for a guided trip to Delphi.
The apartment is very clean and located on a one way street, a block from the the Victoria metro. Apartment has a coffee maker with coffee and sugar. There is a refrigerator, microwave and stove. Two rooms have air condition and the other has a ceiling fan. The bathroom is a tad tiny (for American standards) but fully functional with good water pressure in the shower.
There are several pharmacies and grocery stores close by. There are several coffee shops and eating place nearby as well. The Acropolis is two stops away from the apartment, about a 5 minute ride. Taxi service is reasonable, make sure to download the taxi beat app.