So what is the book about? I think you forgot to say that amidst the praise!

Heh, my goal was a review, not a plot summary. It's also the case that the story unfolds so artfully that I don't want to detract from that by giving anything away (I'm the kind of guy who doesn't even like to read the blurb printed on the book cover because I prefer to let authors tell their own story in their own way).
But in short, it's a quasi-autobiographical book about a guy who is on the run from the law and winds up in Bombay, India. He experiences all sorts of things, and the book chronicles both what happened and what effect it had on him. It's a fascinating look both into Indian culture and into the mind and experiences of the protagonist. If you want to spoil it for yourself any more than that, there's a Wikipedia entry you can peruse.