@Daniel2230,
Do you turn of smart pricing just for the few nights (by setting custom fixed price) ?
Another option is to create a ruleset and use the last-minute discount or a custom discount for those nights.
The listing-text shows the min. stay as set in the standard variable. The seasonal min. stay is not mentioned in the listing. Instead of using these customized options from the standard settings, you can also create a ruleset for that with same effect, but probably more convenient.
I cold not check it, as you own multiple listings and the specific" customized" period is not mentioned by you.
best regards,
Emiel