As a graduate of french I wish this book had been available at the time I was learning the language. It really is excellent and it's hard to explain how good it is as it just has the same words in it as any other dictionary.
However the visual approach coupled with the compartmentalisation into intuitive categories which largely map to activities/events in daily life is alluring and persuasive - to the point that when you pick it up you almost don't want to put it down because you're drawn into looking at all the related words of a topic. In short, where with a traditional dictionary you use it to look up individual words, the visual french approach allows you to do the same but then see all the related vocabulary pointed out to you, e.g. you want to know what eyebrow is in french - no problem, but then you get to see the words for all the other features of the face - and body if you want.
Two final things. 1) a small criticism - for words beginning with a vowel you're not told the gender of the noun 2) the book of course needs to be complemented with other reference books as it focuses mainly on nouns - nevertheless, an excellent addition to any reference library on the french language.