Top Chef - why does the Stew Room look so bad?

You have contestants cooking in a spotless (GE Monogram) kitchen - the appliances are always shiny, etc. Then the elimination challenge takes place in a gorgeous Las Vegas resort - or some mansion or ballroom or something.

So how come when the contestants are waiting to be told who this week's winners and losers are, they're sitting in what looks like a storage room, with buckets and mops and crates of old beer bottles?

Why does the "Stew Room" look so crappy?