Northern Lights Motel in Wawa I would definitely recommend, but it's a bit less than half-way to Thunder Bay. I've also stayed at Red Dog Inn in Terrace Bay (adequate but not stellar), but that's a bit more than half-way. Terrace Bay has a good town beach and a nice waterfalls on the west side of town. Depends where you want to spend your time along the way.
Good suggestions above. The Norwood in Terrace Bay is also nice. Also the Continental or White River Motel in White River come to mind, both serviceable; also the Harbour Inn in Marathon.
Thank you very much! A great help.
Thanks for the info. Just what I needed..