Bath; the act of bathing or the bathtub/bathroom used for bathing. 'お風呂' is a polite/common way to refer to it.
毎晩お風呂に入ってから寝ます。
I take a bath every night before going to bed.
温泉では広いお風呂にゆっくり浸かれます。
At the hot spring you can soak slowly in a large bath.
赤ちゃんのお風呂はぬるめの湯にしてください。
Make the baby's bath water a bit lukewarm.
入浴後はお風呂の水を抜いて掃除する。
After bathing, drain the bathtub and clean it.