Aris was a great host. He was very welcoming and had great suggestions for things to see and places to eat nearby. His place is very nicely decorated and very clean. A highlight is the large outdoor deck he has, which is perfect for eating breakfast and dinner.
If you are driving to Athens like we did, Aris can recommend a cheap overnight parking garage, which is 5 euros/day. We used it for the full time we were in Athens and were very happy that it was so close to the apartment.