Visit to a "non-renovated" part of the Great Wall

Hello, wonder if anyone can help me! Last weekend I went to Badaling Great Wall and even though it wasn't as crowded as I expected it to be, it looked like it was built last year! In 2008 I walked the section from Simatai to Jinshanling - thoroughly enjoyed it! I believe the Simatai section is closed and I would now like to visit a "crumbling" part of the Wall. Sounds crazy? Can anyone please give advice - I'd love to stay over in a village or a cheap hotel for the Saturday night! Some advice on any good places, accommodation and transport there?

Help will be appreciated!

Etienne