Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This book is quite good.

A good book, very thorough and without a doubt the best one to buy if you happen to be able to relax by looking at pictures of other people relaxing. Great enormous glossy photographs of happy, attractive adults and cute babies. Neat bits about massage from other cultures. Lots of fun little details, but little real reason to separate out chapters as the author does. But no matter; the book is great to read and might actually teach you something about massage.