My DD sleeps at home in her crib for naps. At my baby-sitters, she sleeps on a bed, but in the same side positioner. My DD is half swaddled (arms are out) and the babysitter does this too. She closes the blinds (and puts blankets over the windows) and has a fan...same as we do at home. She has been waking up early, not fussing, but smily, but then is tired in 45 min-1 hour later.
Lori