Yes, I've got the rental restriction as well but I have the fortune (? ) of living on my own so I'm not bothering anyone when I take over the laundry. Décor by GladBag with a whiff of Eau de Kodak Rapid Fix Then again, I'm only doing 35mm up to 8x10 so the trays just fit across the washing machine. 6x7 format and larger prints might present a bit more of a challenge!
There are some innovative ideas in this thread: Bathroom and other temporary makeshift darkrooms.
Also, there are a few people amongst the Australian Forums who are part of the Melbourne Camera Club and they would probably know what formats they're able to accommodate. The local lads and lasses can be found here: Australian Forum.
Hope this helps.
Molli