The apartment is very clean, cozy and newly decorated. Good location, some 15 min walking to Acropolis.
At maximum, it can host 6 persons (we were 3 adults and 3 kids), but maybe only 4 would be more comfortable.
The only shortcoming was, for us, the heating system - mainly it was cold inside, as the central heating worked only few hours per day and the air conditioning cannot heat well. However this might be ok for people preferring colder environment.