LOL - I was just thinking of how many fantasy inn maps I've seen with indoor privies, and how many space ship deck plans I've seen without.

The chamber pot was the closest thing to indoor bathrooms they had, be it a medieval city or frontier town. Some nights it was just to cold to make the hike out to the outhouse. And pity the late night reveler who just happened to be passing under the window of someone in the process of emptying the chamber pot!