Dreamer's Resort on Big Lake is an excellent place to stay on your northern MN vacation. I have dealt with the owners many times over the years and they are very accomodating. They treat their customers like family.
Big Lake is a great lake to fish with a chance at catching a trophy muskie on every cast. The lake has seemingly endless humps and weedbeds which makes it fish like a lake twice its size.
Here's a link to their website:
http://dreamersresort.com/dreamers/?page_id=2