If you can swing it and want a sure thing, go here...
Mt Engadine Lodge...
http://www.mountengadine.com/
It's about an hour and ten minutes from Banff but the drive itself is worth while and beautiful. You can just have dinner there. Or you can stay the night. But literally there is no better spot in the area or on the planet in my books.
You're talking about a dozen to twenty other people rather than hundreds.