When I was a teenager, we only ever stayed in one inside, in the two pull-downs and two lower twins situation. I recently learned that my dad booked it to a bar for a nightly gin and tonic when my mom, my sister, and I got ready for dinner. Can't say I blame him! It was tight! I don't really remember thinking those beds were too short for me, and I'm 5'10", but the types of beds are totally different now on various lines. we never had a couch-bed, that's for sure, much less the space to have a couch that turned into a bed, back when we sailed on Carnival, etc. in the 90s! Even with two rooms, my kids are different genders, so the older they get, the need for 2 separate beds will remain. The 11yo can barely tolerate sharing a bed with the 8yo right now, LOL!