honestly, we were very lucky to stay at Christos's place
The apartment is in the center of Athens and near to metro station, plenty of bus stations, supermarket and a lot of mini-markets, which are 24/7 open.
Christos is a great host and helpful person, who won't let you need to ask twice about anything such as recommendations or the apartment needs. (although everything was prepared when we got there)
The place is very clean and the apartment is just perfect for a family or a small group.