This may only be useful to couples & singletons (although our booking form did ask about the no of children) but I thought I would share....
If you are arriving in Oz during the school holidays it may be worth checking out what accommodation the Universities have available. My husband and I have just secured a self-contained apartment at one of Melbourne University's colleges from mid Jan to mid Feb for $71.25 per night - breakfast and broadband included! Plus cleaning and linen changes every 6 days and its only 15 mins from the CBD with bus/tram stops right outside. Not too bad considering hotels are $150 pn plus because of the Melbourne Open!
We were also offered single rooms from $750 per fortnight, with shared facilities, but again with breakfast and broadband included and the option to have other meals on campus. These again were only 10 mins from the CBD.
Hope this helps someone who may be looking to arrive in Jan, like us, or who may be arriving during the Oz winter break or next Dec-Feb. Any questions, please ask x