Overall my stay at Aris's apartment was fine. The location is really perfect, right in the center of the city. Walking distance to the metro station, the Acropolis and a lot of restaurants, cafes and supermarket. If you're planning to explore the city and spend a lot of time outside, this is very good value for your money.
However I had some issues with the front door, It was hard to lock it when I was leaving the apartment.
The place also wasn't as clean as I would have liked... especially the bed and pillows. Didn't feel good. And there was a rancid smell in the bathroom.
It's fine for 3 days but I wouldn't book it again.