We've been going to Scales for several years now, & it's one of the few places we keep revisiting! Yes, the road in is rocky (& not short...probly 45 mins from the road to the campground), but anything with Subaru Outback ground clearance will be fine.
The campground itself is great! It's right on the AT, so there are lots of through hikers that you'll see stop in for a night. That also means that there's lots of great hiking options! Our favorite parts are the beautiful views, wild ponies, & it's (usually) relatively quiet!
Additionally, there are a lot of fire pits& there are pit toilets.