Lead: perhaps a little short - could say a bit more about the history (Phelips arrest? Lord Curzon?), interior features, gardens, use in film, for instance. (done) ok. Layout: ok. Weasel: ok. Fiction: n/a. Lists: n/a.
2a. it contains a list of all references (sources of information), presented in accordance with the layout style guideline.
Well organised sources and refs.
2b. reliable sources are cited inline. All content that could reasonably be challenged, except for plot summaries and that which summarizes cited content elsewhere in the article, must be cited no later than the end of the paragraph (or line if the content is not in prose).
I don't think so, but a few paragraphs remain uncited - most likely they are covered by nearby links, but please show this adding or repeating links as appropriate. (done) ok.
Credit to longstanding editors on this article - User:Rodw, User:Giano, and more recently User:Malleus Fatuorum. This is a handsome article, elegantly structured and illustrated, and a pleasure to review. It is also notable for its long preparation with careful and energetic collaboration by experienced editors. Well done everyone.