Q: Classify the given hotel review based on the sentiment it expresses into two classes: negative and positive.
I recently stayed at the Hyatt Regency in Chicago, IL, and boy was I surprised. The hotel looks nice from the outside but the smell from the river is noxious. In fact, the smell was so bad one night that it almost made it difficult to sleep or even think of eating. As if this were not enough, the bathroom of my room looked like it hadn't been cleaned in a month and their were stains on the "fresh" towels. Towards the end of my stay I saw a mouse on the ground floor and could only imagine what other critters may be lurking in the walls.

A:
negative