I myself and my 2 sisters are taking a side trip to Belgium from Paris after seeing Normandy for the second years and exploring Rouen and other towns we missed. Our father was in Day 2 of Normandy and then later captured in Luxembourg in the Battle of the Bulge. So Bastogne is on my list.
We travel via train or bus so we won't have a car as bad things happen when I drive!! Your house you stayed at sounds so perfect but it looks like you would have to have a car.
I booked Hotel Georgio for Sunday which is downtown Bastogne and then Monday at the Best Western Hotel. Hotels booked up due to the 70th Anniversary.
The new War Museum looks like I could get to it from downtown Bastogne and will research that but if you have any tips on that museum or what else we should NOT miss. Or who to use as a tour or guide.
My big question is did you stay anywhere else in Belgium or Luxembourg that is accessible via train or bus?