Yannis and Helene were very helpful through-out our stay and very friendly in their messages (unfortunately we didn’t get to meet them due to the timing of our arrival and departure).
The apartment is easy to get to by metro from the airport (1 train change is required). Once you’re settled in, the centre of Athens is a 15-20 minute walk.
The apartment is very well decorated. There is a lift to the apartment which is useful so that you don’t need to walk up 4 floors.
Overall an enjoyable stay and useful for exploring central Athens!