Classify the given hotel review based on the sentiment it expresses into two classes: negative and positive.
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Question: Often visit Chicago, but this was my first stay at this location. Was able to secure a good rate through travelzoo. Thought the room was clean and was nicely decorated. Was very disappointed in the service. Stayed on a Saturday night - waited 20 minutes for extra pillows - called for 15 minutes but found out the third shift crew came in 20 minutes late. Also received an incorrect folio under my door(another guests that was staying at this location). I called the front dest to inform them of the error - and they explained that this was made in error and would be corrected. I opened my credit card statement and found that I was charged for three different rooms - one on the date of my visit and two a week later. I called the hotel and guest services took the information and forwarded to their accounting department. Received a message to call the billing department, have called three times - but have not received another reply back.

Answer: negative

Question: I went to stay at this hotel last year. I have got to say it was a great authentic experience, the dining Restaurant was clean and fantastic the rooms were very comfortable with a friendly staff. Its location couldn't be more perfect so close you can walk to do some shopping. Looking at it from the outside at night is very beautiful. It is very affordable. I recommend this place to anyone and plan on staying again the next time i come to town.

Answer: positive

Question: When we stayed at the Millennium Knickerbocker Hotel in Chicago, we had one of the worst visits i have ever experienced. Our room was not ready right away so we had to wait about an hour in the lobby. And finally when we made it to our room we found a moldy shower and a dirty floor. The room service took about an hours and a half to come to the room and she we went to the pool that day, it was so crowded there was no room to sit on the side. Our experience was definitely not a pleasant one. To make matters even worse, we were billed twice for our room which my husband luckily caught before we left. I am never coming back to Millennium Knickerbocker Hotel.

Answer:
negative