I am using this book to plan an upcoming trip, so I haven't had a chance to check the book's recommendations, but I have been to this region before.
I have purchased 4 or 5 other books to research the Loire Valley and this is the most useful. It doesn't contain much information about the chateaux in the region (generally repeated in all the other books). What it does have is some really useful photographs that help to give a sense of what the different towns are like, detailed and nuanced recommendations of places to stay and places to eat, and a guide to a few hundred or so vineyards.
I strongly recommend this book to anyone at all interested in wine, who also wants information about some of the towns and villages too small to end up in the regular tourist guides.