I offer a cozy cabin with two beds, with a great WIFI signal. It is five meters from my house, where you have access to kitchen, living room, bathroom with shower, washing machine and dryer.
I can explain the highlights of Trondheim, and the transport system of the city. The cabin has adequate electric heating, and is insulated for year-round use.
There is a good grocery store 200 meters away, open 7 days a week from 9:00 to 22:00. There are two bus stops, 350-400 meters down the street.