The room was clean and looked as advertised. Whenever I needed to communicate with the host, I got fast and helpful replies.
There was a shared laundry room in the building. The original listing did not include a washing machine as part of the amenities, so that was a very pleasant surprise.
The rooftop has a direct view of the Acropolis and offers a chance to socialize with other tenants. It's still a work-in-progress; seating was added during my stay and it looks like it's shaping up to be a very nice common space.
Decent wifi, good enough to work from.
Only downside was the noise coming in from the neighboring rooms, but even that was no particular hassle. As an old Athenian, I also wouldn't have thought of the location as the safest, but I had no problems during my stay.