I would recommand only for one or two nights.
Positive aspects : good location, close to the subway and the center of Athens ; nice neighborhood with supermarket and lots of restaurants ; the AC is very usefull. The host is always reachable and helpfull.
Negative aspects : the bathroom is really really small, you can’t go in there if your 1,80m tall and there is no room to put even your toothbrush on ; there are always some ants who come and go in the appartment ; the fridge was not clean and a bit small, with a broken shelf ; some towels were not clean.