The apartment is only a couple blocks away from Psyri, one of the best places to eat and visit while in Athens (aside from the archeological sites). The apartment is large studio with a comfortable bed and a small kitchen plus a living room and a bathroom. Prokopis was very attentive and gave us great tips about the city.
The only issue was that the shower was not working properly during our stay. Given how well the apartment was taken care of, I can only assume this was (as Prokopis told us) out of the ordinary.