Green’s Dictionary of Slang

(Aus.) an extremely untidy place or room.

1922		Wingham Chron. (NSW) 18 Aug. 7/2: Witness did not say he was going to try to stop Quinn getting a billiard saloon license. He did say the saloon was like a brothel.
1953		T.A.G. Hungerford Riverslake 5: Use anything you can find in this brothel, but for God’s sake wash it out first!
1986		C. Bowles G’DAY 1: Darlene is the daughter of Mr and Mrs Foster. [...] Her room is always a bit of a brothel. She wants to be a surfie groupie.
1993		B. Moore Lex. of Cadet Lang. 59: usage: ‘My room is such a brothel at the moment.’.