Casavathel 1 was a nice appartement and Thelma was a lovely host.
The appartement was conveniant and close to the metro station. You can easily get to the center of the city. There are supermarkets around and decent equipment in the kitchen. The place was clean. You can spend quiet time on the balcony.
There is wifi but the connexion is limited so you cannot stream or download.
I would come back if I come to Athens again.