Collocations for bathroom - noun

steamy
large, spacious
tiny
main, master (esp. AmE)
luxurious, luxury (esp. BrE)
fitted (BrE)
tiled
adjoining, en suite
The master bedroom also has an en suite bathroom.

communal, shared
unisex
private
The best boats have cabins with private bathrooms.

public (AmE)
downstairs, upstairs

go to, use (= go to the toilet)
clean, scrub
decorate, redo (AmE), remodel (AmE)
hog
Sorry I'm late! Dad was hogging the bathroom.

cabinet, cupboard
accessories, fittings (esp. BrE), fixtures (esp. AmE), suite (esp. BrE)
faucet (AmE), mirror, sink, tap (BrE), tile
door, floor
counter, countertop (both AmE)
scale (AmE), scales (BrE)
I weigh myself on the bathroom scale(s) every day.

facilities
stall (AmE)