Short term lets other than Airbnb (NSW)

In our small block, there are two units that are leased to NSW Health. They are used by visiting medical staff, usually for a day or two, sometimes for a couple of weeks.

The residents themselves are usually pretty quiet (a blessing in strata land). Our main problems are – (1) the units have garages but the Health cars are usually left in visitor spaces, or on the lawns or occasionally blocking other residents (2) stinking garbage bins left on common property in the expectation that other residents will put them out for collection. And rubbish dumped in green waste and recycling bins.

There are many forum posts about Airbnb. But it seems there are other organisations like NSW Health who are doing the same thing, causing issues for other residents in the block. The local Health office says they are not responsible.

Is there any difference between Airbnb and NSW Health in this instance? Does the unit owner have some responsibility as well? (NB I don’t know if the accommodation is provided free by Health or if a rent is charged.) Thanks.