The rating is based on this below, which might not have been immediately obvious to the guest when booking, or even relevant, or what your listing says it offers. I think the problem is the way that Airbnb asks the guest the question, as if these are the criteria (beautiful surroundings, private, great restaurants, peaceful, walkable, lots to do and ‘something else’):
For more of the questions asked the guest in the review, see @Lynick4442 's post here,