My husband and I booked to stay at Maria's apartment on recommendation from friends who had stayed there previously. Maria couldn't be a better host, communication before our trip was excellent, she replied to my enquiries so quickly and sent very detailed instructions about how to get from the airport to the apartment.
She was very flexible with check-in/ check out times and is a very friendly and accommodating host.
The apartment is in a mainly residential area but you can walk to the buzz of city centre in 20mins or you can take the metro which has a station a couple of minutes from the apartment. The hop on, hop off sightseeing buses also stop close to the metro station.
The apartment was light and spacious with everything you needed. We didn't really use the kitchen facilities during our stay, there were plenty of cafes and quirky restaurants with easy walking distance.
Overall I'd recommend staying at Maria's apartment to anyone visiting Athens