Instruct: Classify Amazon reviews into positive or negative sentiment
Query: St. Petersburg

The book was very helpful even my friend who has been to St. Petersburg several times and is a Russian said the book was very good. It was helpful in that we only had 10 days in St. Petersburg so it was helpful in our planning of daily sightseeing.I would recommend this book who is going to St. Petersburg. It will save You a lot of time.