My boyfriend and I stayed in Maria's apartment for 3 nights and had a fantastic stay. We didn't meet Maria, instead her neighbour showed us in on arrival and explained everything about the place to us. He even offered to drive us back to the airport when we left and keep our bags safe from time of check out to the time we needed to leave - which was really helpful.
The apartment is just as it looks in the pictures - extremely clean, very nicely decorated and very comfortable.
The location is perfect - completely quiet and only a 10-15 walk into the main part of Athens. We loved the location!
For 2 people it's perfect - my only thought was that for 4 people the hot water might not last as there was only just enough for 2.
Great stay and would recommend!