The Master walked along the corridor a way, considering. Something in him didn't want him to take the Doctor up to his own room, where he'd been so very intimate with a different Doctor such a short time ago. He almost suggested the Doctor's TARDIS, but perhaps that wasn't such a good idea either.
He shrugged, and pushed open a door at random and glanced inside. A standard bedroom, unoccupied. Nowhere near as nice as his own room, but it would do. "How about this? Neutral territory."