If you want to add some buffer time between your rental bookings, you can do so using the Buffer feature in the Resources setup. This will allow you to do any maintenance, cleaning, or general preparation before the rental goes out again to the next customer.
To add a buffer, navigate to Settings - Rentals - select the rental from the list.
From the setup tabs, select Resources.
Add the Buffer time on this page. You have the option to add a lenght (in minutes) before or after the booking, or both.
When a new booking is made, it will include the buffer time on the Resources Calendar in the system, as well as show in the details the amount of resources time (e.g. 0/30 = 30 minutes buffer after rental).
As shown on the Day view of the Resources Calendar: