My ruling is low berths for low class, staterooms for middle class and a stateroom with a dton of space for baggage, whilst mid-class has to keep their baggage within the standard stateroom alongside them.
I keep the standard stateroom as a mid or high pax can use the same room, whilst cargo space can be used for the 1dton of stuff the High Pax might want to take with them.
Also Luxuries bought for a ship means a servant (robotic or crew) wont be needed at all (Generally Luxuries for me adds more squares to a rec room area or dining/galley area).
I keep the standard stateroom as a mid or high pax can use the same room, whilst cargo space can be used for the 1dton of stuff the High Pax might want to take with them.
Also Luxuries bought for a ship means a servant (robotic or crew) wont be needed at all (Generally Luxuries for me adds more squares to a rec room area or dining/galley area).