I would appreciate more travel guides like this. I feel I am qualified to evaluate these books, as I just finished reading three different guides to the Canadian Maritimes to prep for my trip there, and then after returning home I read this book. Not to prep for a trip, sadly, but one day perhaps!
This guide has a much better history section than most guidebooks. Maybe only history grad students read the history sections, but I appreciate a good history section. I also think more guidebooks should include the kind of little cultural tidbits that are included here. The sorts of little things that one might do that are impolite, like pointing at people or sitting on your towel wrong at the spa. Travelers need to know these things. Warren also includes a section on Lithuanian humor...again, that's the kind of subtle information I need that is usually missing. And there's also all the important stuff about trains and buses and airports and restaurants and hotels, etc. Maybe this style only works for a smallish country, and you couldn't do it for the whole UK or Germany or something, but you could do it for Scotland, or Bavaria, or other smaller places, and really, aren't most vacations going to be limited to one chunk of a big country?
Also, good beach read (in that I read it at the beach).