I'm just back from the Ardennes. Stayed in Hotel Belle-Vue, ->
http://www.hotelbv.com/english/index.html in Luxembourg. in Vianden which was very pretty with a wizard of Oz style Castle. Hotel was €55 an night each for 2 sharing. (but that was part of a big group) The best bit of Luxembourg is petrol is only €1.30 instead of €1.60 in France.
I'll scan a copy of the route we took on Saurday about 230 miles
Sunday we went to Nurburgring which was an hour away 