A potential plot hole* that didn't quite sit right with me, but overall a delightful and atmospheric book 

*Message me if you want to know what I mean; I don't want to post a spoiler. And don't let this discourage you from reading the book - the best thing about it is the atmosphere, not so much the plot. A lot of the book is actually a series of vignettes about the people who visit the hotel and the characters in the nearby Mayan village.