Best things first: The location is quite good. By tram (2 minutes walk) only two stops to the Main Railway Station (and from there into the inner city). There is also a bus station (4 minutes walk) where busses leave to the the former "Reichsparteitagsgelände" (if you want to see it).
The hotel itself is a very typical business hotel. Relatively small room(s), sparsely furnished. The bed, however, was quite good - as usual with the several Accor Hotels. What I did not like in the room: There's an aim to be little "boutique stylish". This includes the wall painting as well as the bath room.
Comming to the bath room: The only privacy you may find is the toilet stall, although there's a huge gab between door and door frame. The wash basin is in the open and the shower stall is glassy on three sides, including that one fronting the rest of the room. Ok, the glass walls are matted at the "essential" heights, but I don't like it at all. If I would have known that beforehand I wouldn't have booked there.
The breakfast buffet was 18€, which is obviously normal these days. But to be honest I would've expected more for that money. Especially when it came to the beacon. That was hand counted (really!) by a waitress, a nice one anyway. Around Nuremberg I know some B&B places where you can get more and better things for breakfast for half the price.
Some reviews say that the underground parking is free. Well, it wasn't. 14€ a day.
Overall the hotel meets the (German) criterias for a 4-star place. But some are really stretched. It would be quite an acceptable 3-star, exept the price. That's a 4 stars.
Overall I believe an "average" fits quite well.