Hi @Laurie855
Go to Calendar and click the availability tab. the first option is minimum nights. If you want to host one-night stays, set this to 1.
If this is already set to 1 night and you are still being forced to accept 7-night stays, check whether something is overriding it.
1) Click the minimum nights block, and then click "customise by check-in day". All days of the week should be set to 1 night.
2) In the availability tab, scroll down to Custom trip lengths. Remove any custom trip lengths that you may have set, as these will override the 1-night setting.
Hope this solves it?