The camper model we had was a 2013 Flagstaff T12SDTH which I believe is no longer available. The one which you referenced (not sure if you've bought it yet) was the T12RBTH which is the current year model. The bed setup in mine was different, it had a sofa bed that could be folded up to become a couch with 2 removable table shelves hanging off the back of the cabinets. For the 2 of us, it was a great setup. We'd sit there to eat or something else and put our small 22" TV with DVD player on the dining table to watch, it was like a desk setup. The T12RBTH that you referenced mentioned a flip-up bed but there was no mention of what was under there after it got flipped-up whether it exposed further storage space or what..?
I'm 6ft and found that when I was sitting there I was hitting my head often so that was the reason we sold it about a yeat ago and went with a full size trailer. The trailer itself was great for towing and saved us on gas compared to what we get now. I loved the fact that it was hard sided when it was all setupup but I'm 70 now and was getting a bit tired of having to pop the roof everytime I wanted to get inside. With this new trailer I got now, it's very convenient to just pull over anytime/anywhere and just walk in to have a coffee, make a sandwich or just relax..