We had a very nice stay at the apartment of Konstantinos. It was perfect with the family, 8 adults and one baby. The location is very nearby the metro station and other facilities and just 10-15 minutes walk to Psyri, for the nice restaurants, and Akropolis.
The roof terrace is ideal to chill after a walk in the city or just to have a drink in the evening with the Akropolis on the background.