Teacher:Classify the given hotel review based on the sentiment it expresses into two classes: negative and positive.
Teacher: Now, understand the problem? Solve this instance: I made my reservation at the Hilton Chicago believing I was going to be staying in a classy hotel with many amenities. Unfortunately, my stay at the Hilton Chicago went downhill from the moment I checked in. There was only one clerk at the front desk, and several guests already waiting ahead of me. Once I finally got checked in and located my room, I discovered that neither of my room keys worked and had to make my way back to the front desk. Finally I made it into my room. It appeared nice enough until I went to use the bathroom and found the toilet clogged. The manager moved me into a new room, so I can't complain too much, but still it was a hassle. Finally settled, I was able to relax for the rest of my evening and was looking forward to sleeping in the next morning. That is -- until the front desk called me at 5 am with a wake up call I had not requested! Needless to say, my overall experience with this hotel left much to be desired and I will choose other accommodations for my next trip to Chicago.

Student:
negative