Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Really helpful

I found this book to be of great help in planning my Trans-Siberian trip. It is organized and contains information that will definitely be indispensible along the way: basic translations of common terms, general info on departure cities other than Russia and things I would never think of adding to a travel guidebook.I would recommend this guide to anyone aspiring to travel by train in Russia.J