The rules probably date back to when such arrangments were often quite sketchy and informal, whereas the Airbnb era adds traceable payments/stay-records, sticky reputations linked to real-world identities, and a commercial-entity's own "guarantee" against harms. So would the board consider waiving those rules under certain situations? It seems the option to rent out property in some cases will protect or improve the property's value... which I presume is one of the major goals of the condo board.