Apartments in university dormitory

Technically that sounds correct.

That should be correct. The International Building Code defines a "dwelling unit" as "a single unit that provides living facilities for one or more persons.... [and includes] permanent provisions for living, sleeping, eating, cooking and sanitation, thus providing a complete independent living arrangement".  Individual dorm rooms don't generally include all amenities (e.g. permanent cooking facilities), hence they don't meet the definition of dwelling unit.  Dorm rooms are typically within a larger dwelling unit that shares these permanent facilities (like a quad or floor).  It's much like bedrooms in an apartment - the apartment meets the dwelling unit definition, but the individual bedrooms within the apartment don't on their own.