This is the perfect place to stay in Athens. The location is unbelievable, the view incredible, and such a nice, comfortable apartment. Windows on three sides, including a great view of the Acropolis which we kept looking at all day and night. Walkable to everything, from all the major sites to so many great restaurants. Right near the National Gardens and the Parliament building.
We never met Kostis and Kalliopi but their communications were great, everything went smoothly. Highly recommended!