Learning something must be going to school, just like going to school in junior high school and senior high school, or you can become a scientist by working as a servant at a scientist's house. School is where you learn knowledge and technology.

A hotel is a place to do business. To put it bluntly, recruiting apprentices means recruiting low-priced labor. If you want to learn technology, the hotel owner can't wait for you to work there as long as possible, because if you don't have technology, your salary will be low and he can save costs. So there is a gap between ideal and reality. What you want is not what the hotel will give.