We had a lovely stay in Athens. The flat is as shown in the pictures and very clean. The communication with CloudKeys (the company that provides the apartment) was super easy and they responded very quickly to massages.
It’s a very nice central flat! There is a special trick for the shower (that is solar powered) for rainy days. You should ask about that during the check in (if you don’t like to shower cold).
We rented the flat for 8 days and two persons and wanted to use the bed and the couch for sleeping. We asked for the second bed and they told us that the extra cost would be 118€ (because you have to book for 3 persons to use the extra bed, which is mentioned in the house rules). We didn’t use the second bed. But it is something to be aware of.