There are a lot of hotels in Trondheim. NTNU has a special agreement with several of them. If you say that you are a guest at NTNU, you will get a special price.
These are the relevant hotels:
Clarion Collection Hotel Bakeriet
Clarion Collection Hotel Grand Olav
Clarion Hotel & Congress Trondheim
Comfort Hotel Lipp
Comfort Hotel Park
Comfort Hotel Trondheim
Quality Hotel Augustin
Quality Hotel Panorama
We would recommend to use the following airport bus to get from the airport to the hotel:
You can tell the driver which hotel you are going to and he will let you know when you should get off. The bus stops at many of the hotels above.