Page Sub Type with Module

Hi all, I’m fairly new to the inner workings of WordPress. I want to find out if it is possible to create a sub type of a Page so that it has its own Module for adding/editing items without having to write a plugin.

eg If I want to list something called Rooms (guesthouse) that uses all the exact same functionality as a page, but I want Rooms to appear as an item in the Menu for adding/editing rooms.

Any help would be greatly appreciated