Steigenberger Hotel, Linz, Austria
This place is attracting customers with misinformation: the hotel is, indeed, directly on the Danube – but it’s surrounded by an industrial harbor, an Autobahn, and a refinery. The location of this hotel is ridiculous. (http://de.steigenberger.com/Linz/Steigenberger-Hotel-Linz)
Since the room was totally overheated, I had to open the window – resulting in my room being filled with a strong “odor” of petrol and gas. It is like a deal with the devil: if you close the window it gets warm since you cannot regulate the heating and the “odor” remains in your room. If you keep window open, you at least can let the “odor” mixed with some cold air but you will be entertained the whole night by the Autobahn traffic noise.