Before saying anything, I just want to mention that I never been so surprised and disgusted from an Airbnb.
The owner is very nice and explained everything on how to get there. The appartement itself is perfectly renovated, clean and had everything we needed.
HOWEVER, the building is not up to date, it’s unsanitary and quite revolting.
We know that this has nothing to do with the owner but the conditions were not acceptable. Several times we found COCKROACHES on our doorstep, entrance, bathroom and clothes ! That should not be acceptable for an Airbnb. I would like to mention that we never once used the kitchen or brought food into the appartement, we were only there for a short trip of 3 nights and already we had experienced all of that.
Also, the appartement is close to a metro station but the neighborhood is inhabited with a lot of drug users and I would not recommend going back late at night on foot. (And no you cannot figure that out just by looking up the address on a map !).
I would highly discourage you from staying there, at least in our case it has clearly ruined some of the experience we had in Athens.