@Alicia1038 If you choose the One day option, the person can book the day after a person checks out, just not the same day the person checks out. Example: Guest A books Tuesday through Friday. Guest B can book Saturday through Monday. Guest C can book Tuesday through etc.
If you don't want to lose a night, then you need to increase your cleaning hours by changing your check out and check in times. Mine are 10am and 4pm, which allows my housekeeper to clean and do all of the laundry on the same day as the checkout of guest A and the check-in of guest B.