While the exact location is never explicitly specified, it is described as a small, dreary, and somewhat run-down town. The Baudelaire orphans, the protagonists of the book, arrive in Stain'd-by-the-Sea after their parents' mysterious death.
The town is filled with peculiar characters and has a sense of gloom and mystery surrounding it. The setting contributes to the overall atmosphere of the book, which is dark, suspenseful, and full of twists and turns.