写一个商务英语短文，要求如下：

Notice
To make our hotel more safe and comfortable, please do as the following rules:
1.Lock your rooms when you go out for we cannot take full responsibility for thefts or items lost/damaged.
2. If you have anything valuable or important, leave it at reception. We will lock them away for you in our safe.
3. Front doors are locked at 11 o’clock at night. If you forget your keys, please ring the bell at the right of the front door.
We will appreciate your coorporation, and this will also be helpful for you.
yours sincerely,
David Brown