The island just before Manitoulin is all crown land and makes for a good spot to sleep after a day touring around the island. There is some obvious noise from the road and bridge but it’s not a very busy highway to be concerned about. No facilities but nice water views from all around and easy access to Manitoulin, Sudbury or Sault Ste Marie. Make sure to visit Bridal Veil Falls!
Max stay for Canadian citizens would be 21 days.