We walked thru the Built for Two at the RV Eally in Daytona this past April. It was very nice with twin beds that, if I am not mistaken, can each electrically fold upwards at the head area like a hospital bed allowing for comfortable lounging and wiewing the TV in the cab overhead area. Floorplan is otherwise identical w/ rear door TL models as were the now out of business Chinooks.
Compared with the larger TL 213, the floorplans of the units above with lower ceilings, curved in sidewalls, wet baths, and a foot or so less length do feel a good bit smaller. They are, however, much sharper to look at from the outside.
The 'dinette/bed across from jacknife sofa' setup that is being discussed makes for two separate not so good twins; but, drop the tabletop down and fold down the jacknife and you have a bigger than king size bed that allows ample room for two big people to sleep along with 4 midsize dogs. This large bed is a huge asset for 21-24 ft. units as it offers a bed larger than most 25-30 ft. motorhomes, yet during the day, it vanishes and you don't have to drive with that bedroom that comprises the 6 ft. tail end of your longer vehicle.