You normally don't start to smell from one skipped shower if you bring clean cloths (mainly underwear) and can spritz some water in your face in toilets. Having Shorter hair and brushing your teeth at say the toilet sink would help as well.
I personally prefer spritzing my face with a faucet instead of a toilet.
assuming Wiktionary can be trusted on all of these
Honourable mention to the incomparable Scots language for "cludgie"!
OK, now I get it that I misunderstood the comment! I thought that "powder room" was supposed to be a word in Europe.
Toilet and its variants - of course.
Thanks!
BTW for French it will be the plural "toilettes", the singular form means "the action of washing yourself"
Key hint to definition was: 'toilet sink' See also: Eau de toilette