Poor Trevelyan! I liked that flat, too. (You realize that now I'll be waiting for images of the Penthouse, don't you?)

I like the banter between the brothers: nowhere near as heated as most of Sherlock's with Mycroft, but still with some edge (Talk to S. He's found a newer model. Isn't it past your bedtime?).

I also enjoyed the question of whether Q would kill to get a flat in London, and the cat that came with the apartment.