Hi there.
We have good experience with this issue.
We are in the Goldcoast of Australia, have a large single story home with 2 far-end rooms on Airbnb.
We have 2 girls who are 6 and 8yrs, and a 6month old baby boy. The girls share a room together and the boy is still in a cot in our room.
We have shared kitchen with guests, but separate lounges and dining.
We have hosted for 3 years non stop with over 450 bookings and have had great experiences with hosting alongside our family.
We have had guests who tell our kids about their travels and play cards with them and we love the richness that travellers bring to our lives. We have had guests who are so wonderful and entertaining to our kids, we have also had some who are very indifferent ... which is also fine too. Kids are not everyones cup of tea.
Most of our guests are couples or a pair of girls travelling together.
We moved our girls to the closest room to ours.
Occasionally we have our kids 'camping' in our own room just for our own piece of mind if the 'vibe' isnt right, but this is very rare.
Our advice is to not let the fear play on your mind, the world isnt full of monsters as the TV would have you trained to think.
Heres another idea, perhaps some cameras up covering some common areas, and just make sure you publicise it.
If you have multiple rooms on Airbnb, cameras in hallways etc are good for everyones piece of mind.
All the best 🙂