Novus City definitely seems to be one of the nicer hotels in the area, and the staff were really friendly and helpful, seemingly genuinely wanting to make sure our stay was good.
The room (we had an executive room on the 6th floor) was spacious, clean, quiet and had a lovely comfy bed. With a couple of extra chairs and plenty of space for 2 people to put their bags and clothes, it made a nice change from most hotels where there's usually barely space for 1 person!
There were a few disappointing aspects though, that I feel were rather misleading from the website... Rooms are listed as having city views, but there are non-opening blinds on all the windows, and even if you peek out the cracks, the "city view" in our higher-floor room was a wall and a bus park between us and the next building.
The shower in the huge bathroom was broken, so had to be held by hand instead of the "monsoon shower" it was listed as. There was also no extractor fan so it steamed up very quickly in there and towels didn't really dry.
The biggest disappointment, however, was the roof terrace and pool, which were one of the main factors for us choosing this hotel. The pool was completely closed and drained for the winter, and in fact absolutely tiny anyway. We couldn't even sit by it and enjoy the view because the area was chained off. The roof terrace - with the lovely views of the city and Acropolis - was closed when it rained but then not opened hours later when it was fine. A great shame!