We stayed only 1 night but this was a great stay! It's central to the main downtown area of Athens and 20 min walk to Acropolis. Romanos was a great host that was very communicative during the check in process. He walked us through details of the apartment and gave great recommendations on local foods, bars, and things to do. We had issues with the subway coming in and he even did some research for us to find out why there was a subway delay.
The apartment itself is very modern and clean, with a private terrace.
Overall you will have a great experience staying here during your trip to Athens!!