I'd previously only read Leinster's short fiction, I think. I liked it. This longer piece is just as good, style-wise. The story of a New York misfit who finds a way to travel to an alternate universe, it's a fun, sometimes funny piece of light SF.
The attitudes (towards women and foreigners) are somewhat dated, but not so heavily that they're hard to disregard. The plot is on the thin side, and there's not great emotional depth. But 4 out of 5 for style. It's a fun, likeable, harmless read. It won't change your life, but it's an enjoyable way to spend some time.
Recommended for a lazy afternoon when you're looking for some easy distraction.