I was hosting with my kids living with me for about a year. I consider it was a good experience for my kids. They got to meet people from all around the world, and my youngest who is quite social, really enjoyed the opportunities to interact and engage with new people.
However, my ex took great issue with it and in fact went to great lengths to stop me from doing it. She reported me to child protection. They closed her complaint as it was vague and there was no evidence of abuse or neglect.
When we were in mediation the mediator advised my ex that just as I couldn't place stipulations upon how she managed things when the children were in her care she could not do the same to me. eg. if she is using sitters, after school care or having boyfriends stay I had no say.
The safety and well being of the children are the responsibility of the care parent at a given time.
I'll let you know in a month what the family court have got to say on the airbnb matter, however, the Lawyer I saw said it's a nonsense, she didn't see it as an issue and didn't consider that the family court would. She did ask me if I claimed the income appropriately, I'd just make sure you do everything above board in relation to tax.