llsworth, less than 20 minutes from the retreat, is a charming Maine town referred to as the gateway to Acadia. It's the nearest, 'real' town if you're feeling the need to venture out. You'll find a cozy theatre, shops, small town museums, art galleries, and some lovely restaurants.
Looking for a recommendation? Check out Finn's Irish Pub. You won't be disappointed.
After dinner, if the weather is warm, enjoy the tallest ice cream cones you've ever seen at Blueberry Hill Dairy Bar.