This is obviously the personal living quarters of somebody incredibly high-ranking, and he has no idea who. He's well-acquainted with gossip in the capital, and he has no idea who this person could possibly be, with the sort of personal area in the capital that only Abrogail Thrune should have, if even her.
He was - hoping, somehow - even now - that this would somehow end in less than the worst way possible, for him - even after he was delivered to the palace dungeon to await someone's use - and, the strange thing, about seeing the polite tea set out for himself, and how it doesn't feel like anything less than the worst possible disaster, is realizing that there's literally nothing he could have seen that would look like the good news he was somehow still hoping for. What was he hoping for, then?
He will obviously not speak until spoken to.