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]
(..) OK, Mrs Hollister, I'll be right with you. Go on back upstairs. You are as ugly as an old pot, but you still a child of God. Queenie, she won't go take a bath without you. Mercy... I'll be right there! You just wait right here for me, okay? My sister gave me those pearls. (..)2008 The Curious Case of Benjamin Button
(..) Quennie! -Hold your water! I'll be back. She went and messed herself all over again... Jane Childress, start her a bath. And mind your own business, Mrs Duprey. You'll be messing yourself soon enough. Somebody stole my necklace. (..)2008 The Curious Case of Benjamin Button