The house has three bedrooms and one and a half 'baths'. [=one full bathroom and one bathroom with only a sink and a toilet]
Would you like me to 'draw/run a bath' for you? [=to fill the bathtub with water for you?]
a 'full bath' [=a bathroom with a sink, toilet, and a bathtub or shower]
(..) Forget it. I'm sure you would've done the same for me. Exactly. You know the Prefects' bathroom on the fifth floor? It's not a bad place for a bath. Just take your egg... ...and mull things over in the hot water. I must be out of my mind. I'm definitely out of my mind. (..)2005 Harry Potter and the Goblet of Fire
(..) See you later, Cedric. Home sweet home. What? - Excellent, excellent. - Ginny, look! - All to the bath. - Look. Girls, choose a bunk and unpack. Ron, get out of the kitchen. We're all hungry. - Yeah, get out of the kitchen, Ron! (..)2005 Harry Potter and the Goblet of Fire