I bought this book for a 4 day mini-break to Berlin, and it really helped us out! I did German at school about 10 years ago, so could barely speak a word, but with the help of this book, we got through fine (though almost everyone in Berlin spoke English!).
Most common phrases used were how to ask for a table in a restuarant, how to order, and what the menu meant!
It's pocket sized, so fitted comfortably in my handbag, and was fairly cheap too.
Would recommend for people looking for phrases to get by in German when going for a short holiday.