If you are assigned to a university, use the on-campus facilities. Its telephone is not busy and its personnel are significantly more customer friendly. Graffiti on anything that does not move too fast can be found throughout the city. It is a visual shame. Watch your step on the sidewalks.
People like to spit, break glass, and dogs do their thing.
Visit the Ringve Music Museum in Trondheim. This is an outstanding experience. A similar museum in Berlin is physically 10 times larger, but has only one-tenth the musical instruments. The demonstrations tour is given only during the tourist season, not during the off-season months. Budget 4 hours for the visit.