Ending today, Karisma Hotels via ShermansTravel offers All-Inclusive Hotel Stays for Two in Riviera Maya, Mexico, with prices starting at $198 per night as part of its Mystery Resort Sale. (We found this rate on December 11; the property will be revealed before travel.) That's a savings of at least $364 per night. Possible resorts include El Dorado Spa Resorts and Hotels (pictured), Generations Resorts, or Azul Hotels - each 4-stars or higher and rated at least 82% or higher on Expedia. Book this travel deal by today for stays through December 22.