The whole purpose of this book is to provide an informative, accessible presentation of the facts about the EU - the pros and cons. So criticizing it for not coming down on one side or the other (as a previous reviewer has done) is rather pointless because it's not meant to, and the writer actually says so more than once.
But if you confine your attention to what it IS meant to do, I don't think you could better it. It's full of information, but it isn't boring. As such, it's absolutely unique, at least in my experience, and the reason I bought it is precisely BECAUSE it's short and concise. In the recent EU elections, prejudice and misinformation poured out of both pro- and anti- politicians and their stooges in the media. By way of contrast, this book tells it straight with no spin, and as such, I think everyone with even the remotest interest in real democracy should read it. Or, indeed, anyone who doesn't like being told what to think.