"There's beds in medical, but the doctor-types are always fussing in there. You're sitting in basically the only place that might work."

His qualifications are essentially a place that's quiet, and relatively private. Are the quiet car's booths the ideal place to actually sleep? Not really. You could probably take a nap in one, but they're not exactly designed for sleep. Fortunately, for the purposes of this conversation, Ronan isn't a person who cares about where he's sleeping. He can fall asleep anywhere.

Between Adam and Chainsaw, though, sleep might be almost manageable. He doesn't want to say that, because that's a huge thing to ask and Ronan knows that if he asks Adam will do it, even at his own expense.