For some reason, Airbnb seems to think that cleaners charge less for a 2-night stay vs a 4-night stay (spoiler: they don't). So looked at the Airbnb listing - and yes, it is there alright.
This is true, Airbnb now supports Short Stay Cleaning fees. This can be configured in OwnerRez! Here's how:
Both surcharges will be pushed to Airbnb and used with bookings of the corresponding durations.
Airbnb requires a Short Stay Cleaning Fee to be lower than your regular cleaning fee - so, you cannot use this as a proxy short-stay surcharge.
More information on common scenarios for surcharges can be found here - https://www.ownerreservations.com/support/articles/common-surcharge-discounts