The communication and check-in was great. The location from the Airbnb might not be the best in Athens but you got what you pay. Nevertheless we never felt not safe. The metro is like 5 minutes away and there are several supermarkets in the near.
The flat was nice. We loved the balcony. The heating also worked nice, since it was cold.
The only negative point is that the drain in the bathroom is clogged.
It would be nice if there was an extra towel in the bathroom for the floor when enterting out of the shower.