Hotels.com doesn’t forget about its loyal customers if you travel often and want to get the most out of your journey, join Hotels.com Rewards. With every ten nights, you’ll get one night free. The membership is for free, and it also gives you access to Secret Prices.
Just click on "Hotels.com Rewards" in the upper right corner, then press "Join now" and create your account.
Frequent travelers can also be upgraded to the Rewards Silver or Gold, which features numerous special services such as priority customer service or hassle-free travel guarantee. You have to book ten nights to become Silver and 30 to be upgraded to Gold.