-----------------Updated June 2017--------------------
An updated version of this Community Guide is now available, click here to view.
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I have seen this question come up a few times on the Community Center so I created another Community Help Guide on this topic. Many people need time to clean their unit so you have an option to have "preparation time" before and after your bookings. Now, I really wish Airbnb would add two more options which would include 1 day before only and one day after only. In order to have that now, you need to manually block those dates off in your calendar.
Automatic Blocking for Preparation Time
Step 1: Click on "Host" and then "Manage Listings". You will then want to choose "Manage Listing and Calendar".
Step 2: You will see your calendar displayed. On the right hand side, choose "Availability Settings" and then choose "Preparation Time".
Step 3: Choose one of the options from the dropdown box.
Here is what each option does to your calendar:
Block one night before and after each reservation
Block two nights before and after each reservation
David
Superhost Ambassador ~ Host Club Community Leader ~ Experienced Co-Host