【正确答案】 Dear Sir or Madam,
I am writing to complain about the service I received while living in your hotel during my vacation from October 1st to 7th.
Though your hotel is rated as five-star one, I found that my room was cleaned every other day. Besides, the food in the hotel' s restaurant was disappointing as well. Not only was it overpriced, but the taste was awful.
I hope you can take my complaints into consideration and make every effort to improve your service in the future so as to restore your good reputation. I will be grateful if you can offer me a discount on my bill. I look forward to your favorable reply.
Yours sincerely,
Li Ming