Beautiful scenery, private sites varying from no service to full service and great walking/biking opportunities. We prefer Jasper to Banff as it is not as hectic and commercialized but offers many similar things.
We prefer the sites that have fire pits. For the most privacy stay away from sites on the inside of the circular sections.
Columbia Icefields, Maligne Lake and Maligne Canyon and Athabasca Falls. Venture off the main highway and you’re almost certain to see bear and other animals.