Until J K Rowling came along there was, in my opinion, no greater teller of stories for children than Arthur Ransome.
Film versions of books are seldom as good as the original books, and this is so in this case, but it's still very good indeed. The film captures the spirit of the book very well. The original story is brilliant and the young actors and actresses do a great job.
The fact that the places shown in the film are, in the main, real places that can still be visited today only serves to increase the enjoyment of the film. Arthur Ransome had an uncanny ability to write about places where the changes which have occurred in the last seventy years or so have been mainly superficial. This makes it easy to take a little trip back in time.