Certain elements in a room always create the same type of ambiance, no matter what decor surrounds them, or what design they employ.
Fireplaces are like that. No matter what materials are used to create them, what room decor surrounds them, or where they are in the house, they provide a calming atmosphere of relaxation. I always wanted one in my house, and when we moved to this house, we finally got one. Now, whenever I want to bring an element of charm, or comfort to a scene I use a fireplace to create it. You can too. In your books or in your home.