Carmel caught the smile, feeling very surprised as she realized he had yet to smile since she'd met him... until now. There was a glimmer of a thought that this was something rare, and surprising, and she was very gratified and surprised that it was at her. And it was a nice smile. "Good to know," she said, filing away the room number for future use. It seemed, for a moment, that he'd say something else, but he didn't, so she watched him go, wondering what all ran under those very still waters.