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.
Welcome to Union City. Incorporated in 1959, Union City combined the communities of Alvarado, Decoto, and New Haven. Alvarado was the original county seat of Alameda County, and the site of the first county courthouse is a California Historical Landmark.