Hello Steve,
the classic way to stop selling rates for a certain period is to activate the Stop Sales21 tool on that rate.
However, if the rate is linked to other portals, it will be stopped to sell on those portals as well.
You could temporarily close your listings on Airbnb by selling the 0% of your rooms on that portal. Read more by clicking on this LINK17!
Hope this helps.
Bye :)