I recently toured a fabulous early 19th century house with a very small dining room. Instead of putting an addition on the house, the homeowners built a barn structure with an upstairs sleeping loft instead. Here's the country kitchen view. The middle of the room is the family room for TV viewing as you will see in the next photo.
The farm table with benches makes this the perfect space for entertaining large gatherings or for housing visiting guests. It is a great no-frills space that probably wasn't that expensive to construct. I think it's an Amish-built structure. There was no agonizing about paint colors either. Pine paneling and natural wood prevailed.