I booked last minute.
My experience? Ha ha ha. Hard to say, hard to describe - the neighborhood is just average, it's ok, quite a distance from the city center, museums, Parthenon, etc., there is, however, good, cheap, public transportation (buses and trams) close by.
The room was clean, furnishings were new, housekeeping fine, the staff are friendly, courteous, and helpful. My room had a spacious balcony. The hotel is affordable.
Aye, here's the rub!
There is a Russian escort service using the hotel. It isn't immediately apparent. So if you are only booked for an overnight or a short stay, you might not even notice. The women are gorgeous! OMG You will really only see them arrive and leave while their drivers wait. They don't appear to work at the hotel or in the rooms. The operation is semi-discreet. I don't think it is a hooker hotel, i.e. I don't believe they rent rooms by the hour. I think they book rooms long-term, but I don't know. So, if you object, book elsewhere.