Altogether it was a nice place, the communication was really fast and helpful. It's also felxible with the check in, my flight was at night, so I arrived quite late and it was ok. On arrival I found some informative papers/maps about Athens. It was a lots of help how to properly plan my stay. Also has an excellent location. I was mostly walking around, but there were plenty of bus stops around, I was able to go to the seaside from the front of the house, and the metro was like 2 minutes of walk.
My only problem was that the bathroom was not excellently clean (but not bad).
I was lucky the first night I spent alone in the apartment, but after the people who arrived were really loud, especially my last night, I could barely sleep with the doors banging, ect. It's obviously not the hosts fault, but I wanted to mention, because whoever is coming, won't know if the neighbors are nice or not, be prepared for that.