That pdf linked in the OP is interesting
I'm staying in a Mantra apartment in Brisbane. When I checked in yesterday the FDA told me that I was only their second check-in in 3 weeks. Here you must present a letter confirming that you are travelling for an approved purpose and the FDA told me that the police had been around a couple of nights ago to check that they had the appropriate documentation for all guests. There are a significant number of longstay guests (eg overseas students) and some owner occupiers in Mantra properties and that is the only reason that some of them remain open. The two non-apartment Mantra properties in Brisbane closed 2 weeks ago. I was tossed out of one of them