A Question for the Braintrust...

[gnomi]

I'm editing a story for a (British) friend, and she has asked me what the American English term is for an en-suite bathroom. And, y'know, I can't think of one. I know exactly what she means by an en-suite bathroom, but I can't think of another term for it. But I'm assuming there is a term in American English for a bathroom that is attached to the bedroom and for which you don't have to exit into the main hallway.

Anyone have any ideas?