Up along the Saguenay River, The village of Sainte-Rose-du-Nord is quaint. It is a bit of a descent into the fjord (therefore a climb out) from the highway but if you need a place to stay in this area it may be worth it. Not sure about motels here since I camped, but I remember an awesome meal in a a restaurant called Au Presbytère.
Tadoussac is nice. If you are lucky, whales sometimes swim as close as a hundred feet from the shore. I saw a few belugas standing in Pointe-Noire (in Baie-Ste.-Catherine across the river)