Since we are still relatively new, we are still on Flexible Cancellation.
Just 30 hours before today (Dec 1) check-in, our scheduled guest cancelled due to illness.
As usual, AirBnB offered that last-minute 10%-off promo, where they said they would email certain travelers about our last minute vacancy.
We gave it a shot, and guess what? 12 hours later we actually got another booking to replace the cancelled one.
I know it doesn't work all the time (we had a last minute cancellation due to the North Bay fires that did NOT get replaced, but, well, there were fires going on), but it did work this time.
Just a point of information, for people who are interested.