Instructions: Classify the given hotel review based on the sentiment it expresses into two classes: negative and positive.
Input: I was in Chicago for a convention and stayed at the Sheraton towers. I had a negative experience because I got about one dozen very painful bites by bed bugs on my torso. It made attending the conference uncomfortable. The staff changed the sheets but could not move me to another room, as the conference had booked the whole hotel. After the sheets were changed, I got no more bites, thankfully. Despite this, I managed to enjoy the stay. I liked the location next to the river, and the fact that it was easy to walk to Magnificent Mile.

Output:
negative