You'll be able to submit a review of your experience once the booking is completed. A button will appear at the top of the page when viewing the booking.
This will take you to a form where you can leave a written review together with a star-rating out of 5 across a number of different criteria.
You won't be able to see the review submitted by the owner until you've completed a review in return.
Please note that reviews cannot be modified, or edited. The review that you submit will be final.