We aren't sure if there may be more than one, but we stayed at Greenville Family Farm CG near Haymarket, vA. a year ago (Spring 2004). If it's the one you are asking about, we really enjoyed it. The sites are FHU pull- thru's for the larger rigs, opposite your neighbor so you are awning sides together but nicely spaced. There is a pop-up and tent section further back on the property and lots of trees in that area. Pool wasn't open yet when we were there so can't comment. Great place to park and see the sights without being in the middle of it all.
This is a working farm with rolling hills, and the cows know feeding time is 5 p.m. It's very rural, however 4 to 5 miles to I-66 and head for Fairfax, VA for the metro to DC in 30 minutes if you go in after morning commute is over. We stayed 4 nights and wished we could have stayed longer. Groceries, Camping World are next exit over in Manassas, all is convenient and the farm is beautiful if you like country settings. We pull a 5th 33' long and 13' tall and had no issues here. We look forward to that being our choice stop for that area. We just hope the family doesn't sell out to development like many of the other areas heading that direction. Happy trails!