As we considered where to travel next, the idea of sunny beach days in the Yucatán became irresistible. And because there are no COVID-related requirements to enter Mexico, it’s a convenient and easygoing destination for American travelers. Extending for 75 miles from Cancún to Tulum, the Riviera Maya offers white-sand beaches, ecological reserves, Maya ruins and reefs that are home to sea turtles and manatees, as well as myriad colorful fish. Avoiding the mega-resorts that line stretches of the shore, we went in search of boutique hotels.