The Austrian National Union of Students runs the “Schwarzes Brett” (bulletin board), a platform for housing, jobs, and more. Maybe you'll find your next apartment or student job there.
Would you like to place an ad on the bulletin board yourself? You can find instructions on how to do so here.

We also have bulletin boards in front of the HTU office where new job offers and apartments are regularly advertised.  
If you post something, please have your ads approved in advance by the HTU office.