SpaTerre, a San Diego luxury spa. Amidst 11 acres of lush, tropical gardens, SpaTerre is your personal oasis at Kona Kai Resort & Spa. With diverse treatments and services featuring the latest trends, carefully selected products, and unique techniques, our full-service Shelter Island spa in San Diego is the perfect way to refresh and renew your mind, body, and spirit.SpaTerre, a San Diego luxury spa. Amidst 11 acres of lush, tropical gardens, SpaTerre is your personal oasis at Kona Kai Resort & Spa. With diverse treatments and services featuring the latest trends, carefully selected products, and unique techniques, our full-service Shelter Island spa in San Diego is the perfect way to refresh and renew your mind, body, and spirit.