Anyway, yes, they’re called refreshers in the Star Wars galaxy. The most memorable thing I recall about them in this context is that apparently on Coruscant dianogas have been known to snake their way up through the plumbing in people’s apartments. =|
I remember ‘freshers from EU novels’ although I can’t quite remember which ones. Refreshers are canon now, apparently as per the new-canon novel “Before the Awakening”.
The use in the EU seems like “bathroom” in US English: noting a place that could have a toilet and/or shower/bath.