Our house was built in 1918, and has a combined living room/dinig room popular of that time. We bought it 30 years ago, added on a large family room/kitchen/eat area. So we turned the dining room into my sewing room, and we jokingly cal the still attached living room 'his man cave.'
It's nice, I can leave my sewing stuff out, without worrying about moving it out of the way, and there is a swing door to slose if it's not the best condition to look at