We will be attending the spa round as usual and now tend to stay here
http://www.domainelongpre.be/k/en/n7...rtment---4-6D1
It is at stavelot~(a few kms from circuit) but i think there are buses from there to francochamps, however a large chunk of the people staying there will be there for the race so you might be able to get a lift, have no idea our transport arrangements yet so could not offer any guarantees, taxi's could be an option.