For those who don't know: The "roomette" is still your own room, with two beds that are couches during the day, and the porter converts them and makes your bed for you. Roomettes also have a toilet in them, so if you're with someone else they may be going to the dining car for a few minutes here and there. The car itself has a shower in it as well that shared by everyone on that car. It's really fun taking a shower at 80mph.
I was on my own, so it was great. About 28 hours with various delays. Had the bed up top overnight, a few beers watching a couple of films on my laptop in the evening, nice dinner, great steak. Went to bed just after Washington, woke up somewhere around Georgia, nice breakfast, back to my "office" and a decent days work (no meetings as it was a Sunday, but I was sshed into many servers and didn't see any major issues with phone connectivity).
Basically a moving hotel and office in one.
There are more expensive rooms with private shower but that wasn't really value for money.
I suspect the roomette would feel more cramped for two people, but it was better than spending 24 hours trying to relax and work in a new york hotel room.