Same I went to sleep in my captains bed, Sam and Sarah at different times where using it which meant I had to go sleep in the peasant quarters. I've also seen all of them sitting at a table presumably "eating" by themselves or in pairs since there was food on the table. 1 time Ioaded into my ship to see everyone in the mess hall staring at me children of the corn style, thought there was about to be a mutiny. Lastly I periodically see them at select work stations. One of Barrett's fav spots was in my workshop fiddling with the research console. I've also seen Sarah "interact" with the weapons table or seen any I've assigned as crew sit down at crew stations/consoles around my ship