Massimo is a very polite and helpful host. He tries to help out with any question you ask him, always answers your messages very quickly. He is very welcoming and you can depend on him.
The flat is very centrally located, I hardly ever used public transport. The historical places like Acropolis and most places in central Athens are within walking distance. Metro stations are close too.
The description of the flat is very truthful and it's a comfortable place to stay.