I book the hotel for its price compared to the other hotels in this area. (By the way location of the hotel is good. it is between CAT train and stephanplatz so it is easy when you are using train from airport to city, much easier if you use austrian airlines with city check in)
Anyway, the room is small, old and not very clean if you compare other radisson hotels.
When I say old, not historically old, used and deformed way.
However, the staff is very warm and helpful, they are the best thing about the hotel, but like everone else is saying HOTEL NEEDS RENOVATİON :)
Be careful when you compare the prices some options include breakfast some dont.