Booking in Advance And Get Up To 20% Discount Barceló Costa Cancún, Mexico. Enjoy Super Summer deal. Booking in advance at Barceló Hotels & Resorts brings rewards. Guarantee your summer vacation at the best price. Book now and get the best discount available. T&C: Minimum stay 3 nights. Booking period : 31/08/2015. Period of stay : 31/08/2015. Book Now.