If i were shopping, having never stayed there or even looked in the lobby, then just looking at the pictures posted by guests I suspect you are correct in that its sort of a cheaply furnished hotel. Even the theme seems to be a bit inconsistent. The style seems to be directed at under 30 clients. Then there are several complaints about the noise of the elevator in the rooms. Thats a first for me. Nothing just horrible that I can find, but nothing particularly remarkable either. I compared the cost against where I stayed in Salzburg last year, a hotel I sort of liked, and a good location, but was known to be a bit pricy and the Weisse Taube was only about $25 a night less expensive. If I were hunting online for a hotel for my kids, and I were paying, I would choose the hotel, if paying for my trip its one I would skip.
As for the restaurant. Yup, just based on the photos posted by guests .... would not have been tops on my list.