Well the cabin is cosy but quite comfortable. This is going to convert into bunks for our overnight sleep.
Derek, the guy you saw welcoming us at the door, encouraged us to go to the lounge which he assured us we would find very pleasant. And he was right. Comfortable chairs with good views on both sides whereas the cabin only has a view on one side. We settled in there for the trip.
Red Sleeper doesn't have an ensuite but doesn't bother us at all. The shared toilets and showers are very spacious.