Try Mama Gertie's. It is just east of Asheville on I-40 a few exits. Probably within 10 miles or less of Biltmore. This campground is terraced with beautiful landscaping. Be sure to call and tell them what equipment you have. They will then reserve you the appropriate site.
I have been in another campground (which I can't remember) in Asheville which I would not recommend.
'07 Winnebago Journey 34H - CAT C7, Koni's, MCU's, SS Bell Crank, Safe-T-Plus
'07 HHR Toad, SMI AFO, Blue OX