Does what it says on the tin - perhaps too much of the book relates to where to stay and the more expensive eating places, but the suggested 'must do' things to see and experience make this a worthy buy.
Maui may seem like a small island, but it is pretty diverse and there is a lot to see and do if you're interested. We were there for a week and this, combined with the low US speed limits and windy roads, made it difficult to do everything we wanted to...not that you necessarily want to drive fast when you're there! This book is small enough to browse through quite quickly, but very clearly laid out in different sectors of the island, making it easy to find what you're looking for. The contents definitely opened our eyes to a lot of experiences we would not have discovered otherwise (for example, I'd never heard of Hawaiian Slack Key Guitar and we got to see a couple of masters play one night). There are some great road itineraries, the tips on where to stop on the road to Hana spot on, and directions to less populated beaches ideal (Hawaiians are not the best at signposting, which is a good thing in this case)!
Maps are clear, restaurant recommendations excellent (don't miss Cafe O Lei in South Kihei) and the prices fairly accurate. One feature I really liked was 'Local Knowledge' where the writers ask a range of locals for their tips on what to do, where to eat, where to watch sunset, etc.
On the other hand you could just lie on the beach, drink a few maitai's and take the occasional dip in the ocean...