been there in 2003. the race was fantastic but the things around the race sucked big time.
we stayed on a normal camping, we didn't made any reservation for it and we had a fantastic place. it was a camping with normal showers, toilets, your wife can use her hairdryer.
there's also one big mountain, and I'm not lying with saying MOUNTAIN, full of tents and bikes and just lot's of drunk german people. it's a bit like the open pastures in assen/donni. no toilets/showers, no options to dry your hair. but you can avoid the mountain and just go to a camping.
beside the race we found it very hard to find any fun places in that village, I think it was Hohenstein-Ernstall. we found 1 pub (named 'Bier garden blabla something'
), but they were so busy they couldn't serve us. there was a big podium with a band that played awfull german music. we had to eat at a 4 star restaurant called 'die vier schwanen' and we met Ukuwa at that restaurant/hotel. one advice from me is to bring lot's of money
maybe christiana can help you further. I know she's been to the sachsenring last year, maybe she can tell you more about the facilities etc.