Sleep tourism is shaping up to be one of the biggest travel trends for 2026, with hotels, wellness resorts and even medical-led retreats building entire vacations around one goal: better rest. Instead of packed itineraries and nonstop sightseeing, travelers are booking sleep-focused stays with smart beds, blackout rooms, spa treatments and personalized wellness programs. Here's what sleep tourism actually involves, why demand is growing so quickly and how to create a similar sleep retreat experience at home.