Great views of the Acropolis from the rooftop restaurant. I would definitely spring for an Acropolis-facing room if possible, views are excellent at any time of day (we were on the top floor, so that might be a factor). From this hotel, pretty much <10 min and definitely <15 min walk from everything you would want to see in Athens (Acropolis, Plaka, Monastiraki, etc.). About 5 min walk to nearest metro station (easy to use in this city).
Staff were friendly and very accommodating. This may have been an extreme case of luck, but we communicated beforehand that we would have a very early arrival to Athens from Naxos (9am), and they had our room ready. I wouldn’t hold them to that for every traveler, but it just goes to show the excellent customer service.
If we ever visit Athens again, I would definitely stay here!