Who should I look for when I go to the hotel to investigate? Will it be rejected?

Go to the front desk of the hotel first and tell him that he wants to see the personnel manager in your. When he asks you what's wrong, you can tell me that I'm a journalist from a school, and I'd better have a marked certificate around my neck, otherwise he won't do anything for you.

If you can't see the personnel department, ask the lobby manager, the worst manager on duty that day. Good luck.