One of my good friends has an amazing talent for interior design. It's just a natural ability and her place is a showplace. Her last condo (very small 1 BR apartment) could have been photographed in a magazine.
Our TH is comfortable. I do at times wish that it was decorated in a bit more sophisticated manner (the couches are 13+ yrs old and sagging, the kitchen table is 20+ yrs old and a little wobbly and now looks old/dated/cheap, etc). Some rooms look really good, others not as much. But, right now I have a preschooler and we're trying to have another. I figure I'll wait to do a bit more until we're done having kids, they are out of the accidental peeing on the couch and possibly wrecking furniture phase.

I put up a lot of pictures and other prints that I have bought from our travels - not fantastic decorating, but they make me feel happy and comforted.