Even among luxury resorts, Sensei Lanai is not your typical property. The Four Seasons-affiliated getaway is located on the private Hawaiian island of Lanai and is the brainchild of Oracle founder and billionaire jet-setter Larry Ellison. Sensei specializes in “optimal wellbeing programs,” or curated stays with experiences based on growth, mindfulness and improving guests holistically. “We’re in the center of the middle of the ocean, and it’s really private. It’s quiet,” says Kelly Georgiou, manager...