Looks a bit like a couchette arrangement on a Continental European night train.
(These are standard old-fashioned train compartments with the side corridor and sliding doors, and with six seats, three opposite three. When it's time to sleep, the train conductor pulls a few levers, and each set of seats converts into three beds, one above the other. So you have a compartment with six people sleeping in close proximity, although you are not actually sleeping next to anyone because you have the compartment wall one side of you and the "aisle" the other. You are not expected to change out of your day clothes although you are given a blanket. A bit like CW in that respect.)
There is certainly a market for those, given the right journey timings, and in fact on a train journey that starts after dinner time the compartments will normally be in "bed" configuration when you board.