I'm 6'0" and my wife is 5'11" and we can't wait for next camping season. Original mattress sucks, but we added a 4" topper on it and we like it. We have a 2017 274dbh and we love it, but it is not a 5th wheel. I can touch the sliding doors if I lay flat on my back, but normally I sleep on my side and don't have a problem. Good Luck on your decision.
John & Lori - Wisconsin
2017 Cherokee 274 DBH
2012 Ford F150 FX4 Screw Ecoboost