Here is a good article on a vestibule…

If you don’t have one, the ‘stuff’ of a vestibule is now in your front room, your foyer….

Stuff means, the cold/hot air outdoors, the books and umbrella, the mail and packages …coats and shoes and keys…all this can have their place, keeping your main house cleaner…

Most of all, the rug or mat people use to wipe their shoes and boots on before coming into your house… Isolate 70% of this dirt out here, not in your main house. People try to be gentle to your house, having a vestibule, with a shoe mat helps visitors play nice.

This can also be the place where you put your sign, no street shoes indoors… the idea of tracking urban filth into a clean house just makes work for the homeowner,.

https://www.schlage.com/blog/categories/2017/04/consider-the-old-fashioned-vestibule.html

see page 116 of Edith Wharton

https://immortalpie.wordpress.com/2012/04/11/obsession-faience-stoves/

stove for vestibule, not a fireplace….