If you believe your stay will be unavailable to rent because either you are going on vacation or renovating your space, all you have to do is go to your 'calendar'.
There you will see that all of the calendar is marked 'available' already. So you just select by clicking and dragging on the dates you will be unavailable, click unavailable and save.
You may click on single days, or multiple days.
If you think you've made a mistake then just click on the dates again and drag. Click 'available' and save.