Take a look at Lac Seul in NW Ontario. Might be the best Walleye lake on the planet, certainly in the top 10. Quantity and quality. Lots of fish over 25", with legitimate 30's. Easy to bring 50 fish a day to the boat.
It's a massive lake, and although there are some drive in camps, there are also remote fly-in camps in the far reaches of the system. We stayed at Lac Seul Outposts (highly recommend them)...it's a 45km boat ride from the nearest road, so it certainly feels very remote. You can fish all day and not see another boat. Nice thing about LSO is you can bring your own boat, so you can have all your gear and electronics. And you don't have to worry about weight restrictions...bring all the suds and steaks you want.
Great Pike fishing too, and also some big bonus Smallmouth. It's also home to big big Musky...in fact, that's what most guys in camp were chasing...the next world record.