We like smaller trailers ax well, and currently have a 17' Starcraft. It's pretty much the same floor plan as the Nash.
We're looking to get a slightly larger trailer. We love our current trailer, but the little annoyances we have will be the same as the Nash. The dinette is the only place you can sit. The long seat bottom and short 90 degree seat back will be very uncomfortable in a short time. We don't spend a lot of time inside, but it takes very little time for it to be uncomfortable.
The "pinch point" between the bathroom and kitchen area is a pain for two people to pass each other. We are not big people, but it's a pain.
Lastly, the bed is a pain to make because it's not accessible from both sides. More my wife's peeve, but it's valid.