Hello @Tamara274
You can add a ruleset for the holiday period (First select this period on the Multicalender, and add the ruleset on the screen on the right. Do not forget to save twice (!): first the ruleset itself and after that to apply the rule) and set the discount for 1 week to 0%. It should overrule the normal discount, as mentioned in the Help.
But it's always a good idea to check (after making the ruleset) the results on your listing by simulating a booking.
PLease note: pricing with rulessets does not work when using "Smart pricing"
Hope this helps,
Emiel