The apartment is close to Omonia and Monastraki, which makes it a perfect location for your visit to Athens. Nevertheless, the house in which the apartment is located equals a ghost house. It is really dirty and stinks, and it is dark on the floors with pidgeons flying around. In the apartment itself it smelled a lot like someone has been smoking in there for several days before. The Wifi was working good and we were almost never at the place, which I guess is the same for everyone else visiting Athens.
Beware that if you choose this apartment then for its nice location.