So, what, they're just supposed to hop up and squeeze onto the replicator's little shelf in the living area? They're Starfleet officers, not wizards. They may not have tanks for black- and graywater, but they'll still want a commode of some sort. At least a little curtain, for dignity.It seems to me that if you have a replicator on board you don't need toilet facilities as the replicator can recycle anything and that includes body wastes.