On this Vacation or Business trip book your Hotel from Hotels.com to save more. Hotels.com Offers their customers a wide list of discount on their bookings. Here is one such reward from Hotels.com in which when you book and stay 10 nights at eligible properties, you’ll get 1 night free to redeem at another. The Store also works out the average value of all the 10 nights you’ve collected and give it back to you as a free night.