Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Indispensable

My grandparents got this for me before I left to study abroad in Paris for a few months. It didn't take me long to realize how useful it is. I literally didn't leave home without it! It had everything I needed and was small enough to fit in a purse, but not so small that it was difficult to read. The metro map in particular was accessible and very, very helpful. Highly recommended to anyone going to Paris, whether it's for a few days or a few years.