You absolutely must go! I almost didn’t go because I thought it would be just commercial and horrible, and two friends of mine who went to Italy last month almost didn’t go for the same reason. But I talked them into going and they thought it was the high point of their trip, even though they were only there overnight.
Stay a little longer if you can, because in addition to being holy, it’s beautiful!
Sigh. I really want to go to Assisi, too. My mother brought me ceramic plaque of St. Francis when she went there; I’ve glued it back together a couple of times!