You were probably definitely at the hotel remains. We have visited it often as it is on our walking bath to the mail dock. Mostly everything is very overgrown now, but back then there was more lying around. The story about the hotel is fasinating. Go onto
www.bearisland.org for info to buy the book "Reflections of Bear Island". The history is astounding. It is on the bookshelf of the home we visit and I read it every year. You may have also visited the fresh water spring (dried up now because of development). That was our only source of drinking water for a long time. The kids were given the task of fetching it - it became an adventure. (plus us adults had some quiet time!)