How did no one notice?

Stuff reports:

A student’s body went unnoticed in a University of Canterbury hall for close to eight weeks, Stuff has learned.
The young man was found only after fellow students at the Sonoda Christchurch Campus accommodation noticed an odour and raised the alarm. 

This is bizarre.

Did none of his neighbours not notice him about?

Did his friends and family not notice him missing for eight weeks?

Did the staff at the hostel not notice him missing?

I was at a hostel at Otago University. If someone was dead in their room, I’d expect them to be noticed missing within a day or two.