The flat is really nice and really really clean, and the bed is amazingly confortable !
There is a balcony that has sun during morning which is perfect to have breakfast.
It is in the center of Exarcheia which is the perfect neighborhood to go out as it is full of nice restaurants and bars, but it's in a very calm street so it's not noisy at all.
Mary was a super host : she took time to explain us everything about the neighborhood and even after our stay she took time to help us when we were stuck in a island and couldn't get back to Athens because of a boat strike.
I definitely recommand this accomodation !