Instructions: Classify the given hotel review based on the sentiment it expresses into two classes: negative and positive.
Input: Stayed at the Chicago Affinia Dec 10 thru Dec 12 and was very impressed with the staff, the room, and the location. Close to shopping and the pizza place next door was great. Of course, there were many other restaraunts nearby as well. I had a little trouble figuring out the heat, but it was fine once I learned how to set it. They were working on the hotel, so we got a great rate. But the work never bothered us. The room was great, with the walk-in shower in the spacious bathroom a wonderful surprise. I would definately stay here again and would recommend to others. 

Output:
positive