Great place in the heart of Exarchia: to me the best place where to stay in Athens - very central, very lively, full of bars and core of the alternative life of the city. That's of course not the chic neighborhood completely getrified and polished by global urbanisation. Don't go there if you're easy to be 'unsettled' by graffiti, anarchists, etc.
The apartment in itself, with a fabulous view on the Licabetto, is very clean, full-furnished and comfortable. At the last floor of the building, you won't here anything from the 'movida' of the street. Definitely recomended!