In the Accommodation type, the settings for occupancy, starting price and number of accommodations of this type are missing.

When I create a new Accommodation, I only have description section and the settings "normal occupancy", "maximum occupancy", "starting price", "number of accommodation of this type" are missing. Why?

This can happen if you have a multi-language plugin and you have not set it so "Accommodation" posts are translatable. 

• Polylang: see here instructions to set up Polylang with HBook
• WPML: see here instructions to set up WPML with HBook

Note as well that the accommodation type settings "normal occupancy", "maximum occupancy", "starting price", "number of accommodation of this type" are only shown for the main language accommodation post.