Living in DK

Wow. I've never realized how expensive it is to live at a hotel for a longer time until now. 

Between the 5th november to the 26th i'll be living in CPH for a project work and i have to be the one who finds the living. And since its school who pays, it has to be somewhat cheap. 

Any suggestions?

Ive been searching FOREVER. And since that fucking sensation white event is held the 15th almost all hotels are unavailable. Wtf is that?