The dining room should be a place where people can sit down, relax, and enjoy a leisurely meal. If you use your dining room on a daily basis, you will have to be practical and accommodate your furniture according to the traffic flow the room sees everyday. But if you serve meals there only a handful of times during the week or month, you can be a little more daring.
The dining room often opens to the living room, kitchen, or foyer, so the style and colour should coordinate with those spaces. As a designer, I like to create unorthodox dining rooms for entertaining and special occasions.