"It might be for additional security, but I agree that it is odd that they encouraged an overnight visit." On the other hand, they're very trusting to let people stay here, as he knows some tend to have sticky fingers. And he doubts frightening visions of war will deter them. Perhaps the artifacts are enchanted with something worse than visions if someone tries to steal them.

He turns back to Ianto. "I don't believe they are. We might be free to leave whenever we wish. And if that is the case, I believe your bed is calling you to come home." He's trying to be comforting, he really is.