Gregory is a nice host who will respond quickly to any questions you might have.
We had a nice stay in Athens at the apartment - the view from the balcony is just stunning.
However the location was a major problem for us, since we were confronted with many shady people on the street dealing drugs or lying around. To me this was the major problem, because we didn´t feel safe in this area at all and that´s a feeling you shouldn´t be confronted with on your vacation.
Aside from that: great apartment (very white obviously), very nice view, friendly and helping host!!!