Everything about the apartment was good: comfortable, clean, with everything we needed, and above all a superb location that allowed us to walk everywhere.
The only not-so-great part was the private driver service that is offered by the host. It is 3 € cheaper than the set price for regular taxis, but the driver didn’t take the toll roads and we spent lots of time in jammed streets around industrial areas; probably because of that we had to wait for him a bit more than 30 min on arrival. He was a nice guy though, gave us some tips and picked us up on time on the way back.
In any case we definitely recommend staying here and exploring Athens!