I've stayed in Nadia's place for almost a month and really loved it:
- Nadia and her husband are very nice and friendly. The check-in and out went smoothly.
- The apartment was super clean and tidy. The furniture is new.
- I really enjoyed the neighbourhood - it is safe, a lot of grocery shops, pharmacies and cafes around. A lot of museums in the area (Benaki, Cycladic Art, Goulandris). The walk to the subway takes up to 25 minutes, but you can jump on a bus nearby instead + the apartment is not far away from the city centre, so I would choose a walk instead.
The apartment is perfect for 1 person or 2, but I guess it'd be too small for three.
I was "lucky" to be in Athens when they had snow, and as the apartment has no radiators, it was extremely cold there. Unfortunately, the AC and the heater didn't make much difference. But I guess it's fresh inside when there's +40 in Athens in summer :)
But still I really enjoyed the whole experience and would recommend Nadia as a host.