Like most Frommer's travel guides, this is a generally informative, pocket-size guide with accurate data for general trip planning to Aruba. Great if that is your destination.
However, the title is very misleading as most of the book is dedicated to Aruba, with only one chapter each devoted to the other two ABC islands. The minimal coverage of Bonaire and Curacao mainly point out differences from Aruba, but offer few details regarding the other island ammenities.
Since I purchased the book in anticipation of a scuba trip to Bonaire, I found it of little use. There are other much better guides for Bonaire.