I think we can start with hotel sales, but we should be familiar with hotel products in sales. You can talk to them and go to various departments for half a month, so that you can have a clearer understanding of the whole hotel. I'm worried that there will be a gap between the actual situation and your expectation, because the hotel is run by a state-owned enterprise. If you do it for a year or so, it's a waste of time.
If you have other choices, I suggest you consider some international hotels, where what you learn will be more professional.