L'Arbre à Lettres is a charming bookstore and café located in the 6th arrondissement of Paris. The bookstore specializes in literature, poetry, and art books, and has a cozy café where you can enjoy a cup of coffee or tea. The café also serves light snacks and pastries, making it a perfect spot for a quick bite or a leisurely afternoon. The bookstore also hosts regular literary events and book clubs, making it a great spot for book lovers.