The illustrations are fun and inviting, and the book would make an excellent choice for sharing with a child before a trip to Paris, or as a souvenir from such a trip, as the story describes a dash through the Louvre, and the illustrations show a lot of world-famous artworks that are at home in the famous museum.  Likewise, the scenes outside the museum do a great job of capturing a sense of Parisian sights: the Eiffel Tower, the architecture, the baguettes in a cafe, etc. But aside from that, for general audiences, I’m not sure the story has enough of a plot/climax.  It basically tells about an old woman who turns down an invitation from a friend to visit the Louvre, to which she’s never been despite living in Paris, because they won’t allow her dog; when her dog escapes and races through the museum, she and her friend follow, and when eventually stopped by a guard Madame Martine apologizes, but the guard says they can make an exception because her friend works there.  It’s fine, but a little flat.