Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Great guide! Well organized, informative and easy to read.

We bought this and the Snorkel Hawaii: The Big Island, and are very pleased with how useful and well done they are. There are overall locator maps, useful Site-at-a-glance summary pages, detail yet easy to read maps for locating the snorkeling sites and entry points, special tips and caution about the sites, as well as review about boat trips. There's also a useful overview on snorkeling gear, basic care, and snorkeling hazards. Highly recommended if you're planning a snorkeling trip to Hawaii.