Regarding the behavior of the searches on the Sales Channels, each portal is responsible for the result presented to the guest and only acts in the transmission of the minimum of nights accepted for the day and the daily rate.

See below the most common behaviors:

#1 - The restriction of the minimum of nights only applies at check-in

In this model, what will make the reservation to be accepted or not is the minimum of nights registered at check-in.
It is the most common used on sales channel as Airbnb and Expedia, for example.
In the example beside, the minimum stay on 11/29 is 3 nights. In this case, the guest that searches for a lodging to leave from 12/02 onwards will be able to make the reservation normally, as it complies with the restriction of 3 minimum nights, even if on the other days the restriction is for a greater number of nights.
In case you want to avoid check-in in some specific day, strategically, because of your minimum of nights registered, use the [Restrictions] tool in your calendar.
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#2 - The restriction with greater number of nights is the basis for the search result

In this model, when receiving a search, the sales channel will verify all of the minimum of nights of the period and will use the greater number of minimum nights as basis to receive or not the reservation.
For now, the only channel compatible with this behavior is
In the example beside, a search for reservation between 11/29 and 12/02 would not be possible, because, in the period, there is a policy with number of minimum nights equal to 7.
For the basic pricing setup we recommend to register your rate structures with the maximum of possible lines and only leave the price blank when the minimum of night does not apply to the desired period.
In the advanced pricing configuration, just work with the creation of [Events] throughout your rate calendar.

Now that you already know how the behavior of the minimum of nights on the sales channels is, how about checking out more related subjects?