Great little flat next to the Petrolana station - easy to find and to get to central Athens (by foot or transport). Apartment itself is small but light,open and clean - quiet neighborhood, especially at night after a long hot day! Lots of authentic Greek restaurants around (definitely recommend Anteti Tavern up the road).
Communication with Κατερίνα and her sister was great - Google Maps thinks it's further up the road but it's closer to the station.
Definitely recommend and would stay again. Thanks for everything!