When you pick up your child from the Kid's Club at Grand View Lodge, and she begs you to let her stay — building sand castles on the beach or whapping a tennis ball to an instructor across the net — you can trust she's been having a good time. Added perk: Any guilt you felt for dropping her with strangers (even if they are perky Minnesota college students on break from child development courses) will melt away at the spa, like tight muscles under hot stones. The philosophy at Grand View's Kid's Club transcends baby-sitting in sunshine: It is to give children access to the whole Grand View experience, from pontoon rides to golf lessons to tubing behind a powerboat on sparkling Gull Lake. 23521 Nokomis Av., Nisswa; 1-866-801-2951, grandviewlodge.com