If you don't mind the sound of trains every few hours, this is a great campsite.  Nestled by the Columbia River, each campsite has plenty of space and full hookups for RVs.  There is also a separate area just for tent campers, a group campsite, and a day-use area with a beach on the river.

Tough to get reservations during the summer, but it is open year-round, if you want to camp during other times of the year.  Being in the edge of the Columbia Gorge, it can get windy, so awnings are not always safe from damage.  

Just below Mary Hill museum and Mary Hill Winery, and Stonehenge, a memorial for WWI.  Waving Tree Winery has a tasting room as you enter the park area, as well.  Great place to relax and enjoy some great wines.