Ok, So I'm not 6'2" 210, but almost.. I'm closer to 190. I bought a 2013 178 last year. I sleep in it as many weekends as I can. I sleep on the bed just fine. I can't think of a time when I've every stretched my body head to toe to sleep on my back. Who does that? Shorter people maybe. When its a tight quarters, I know to put a pillow under my knees or sleep on my side. Problem solved. Shower isn't really a problem. I use it. The height isn't nearly as disconcerting as the fact that I'm showering with the john.
Simply put, if you're buying something for a replcement for tent camping, it does that job just fine - even for people of above average height :) Heck, the dude I bought it from was taller than me! I even remember asking him if he was ever cramped. His answer? "Yep." We laughed. I gave him the cash and that was that. I can tell you this, of my short list of complaints with this product, the size isn't one of them.