Our MA is pretty much engaging in citizen's arrest of "illegal" short term AirBnB tenants and reporting them and their landlords to the URA. She is grabbing them (physically) and demanding their ID and any evidence of an AirBnB booking (most of them have a printout or a phone with the booking on it). She's also uncovered extremely illegal copying of condo keys, Condo cards and such other security risks used by the AirBnb tenants (presumably with the connivance of the landlords).
I would suggest to any readers thinking of using AirBnB either as a guest or LandLord to wait for the dust to settle and URA to get their freak ass into gear and come out with a definite policy or set of guidelines.