Pros:
Dimitris and George's apartment is beautiful. Milton (one of the hosts) was always trying to be attentive. Decoration, cleanness and spaces were great. Check in was also impecable. It is literally in front of Atikki station, which makes moving around so much easier.
Cons:
Unfortunately, we had some mishaps with a reparation of a shower in the midlle of the stay that could have been avoided (it was not a critical change). Communication for going into the house to repair, and check some things could also have been improved. Because they work on the office next door, the warning times for entry are apparently not planned very much, and not much notice is given. I think it's something they will improve on their next visits though.
Despite that, we recommend it and would come back in a next visit to Athens.