We can recommend Aris's flat. He is very kind and friendly host. His flat was tidy, quiet, according to photos. We enjoyed (me and my 4 friends) summer terrace for wonderful morning breakfast and also sitting with friends during evenings. From his place it is really close to visit Acropolis and city center, convenience to metro. Athens we visited for longer weekend and it was super-great stay. We really appreciate Aris gave us his tips where to go for a good dinner and what to see in a city.
We enjoyed our stay in Athens. Do not miss there ancient Acropolis. Tomas.