I recently spent 16 hours on a ship, got on at 3.30pm and got off at 7.30am. We had a private cabin with our own bathroom, bed, TV and fridge. After dinner in the restaurant we had a good nights sleep. In the morning I had a nice hot shower and got dressed in clean clothes.
Arrived at our destination feeling fine. Would I like to have spent the same time confined in a sitting position with no privacy ? No way.