Okay... going by the CRB description, it suggests that the patient is placed in hibernation by Fast Drug anyway, so scratch any thoughts about needing to entertain them. Dose them up and strap them in so they can't roll out of bed.
I do not think a standard acceleration couch is going to be suitable, although some kind of bunk bed arrangement would likely be equivalent in volume.
But keep in mind these are hibernating people. They still breathe and may move, and will almost certainly need nursing attention to avoid bedsores, or to deal with toilet matters, which frozen passengers will not. That can be automated, but robot crew vs live crew is a separate discussion.