Since you asked, I do think it is odd that your grandchildren sleep with you if you have other accommodation available for them. Also, a nine-year-old should be able to bathe or shower alone. I would worry more about lack of independence at that age than anything improper, but at age 9 I would expect a boy to be more modest than you are describing.
Free printable topographic map of Morro Bay (aka Moro Bay and Bernard's Bay) in San Luis Obispo County, CA including photos, elevation & GPS coordinates.
Morro Bay. An hourâs drive from Solvang, sixty seven miles on the coast, lies the scenic fishing village of Morro Bay. The town itself has much to recommend it: an embarcadero with restaurants, gift shops, fresh fish purveyors, art galleries, a picturesque commercial fishing fleet, and an iconic landmark, Morro Rock.