Fascinating post - unusually so for the Daiily Wail.
The Chambre-Hardman property is managed by National Trust. (Bet they don't allow photographs inside....)
Here's a link to more of his output.
http://www.ntprints.com/collection/2480/chambre-hardmanI'm hoping to get to visit this place soon. Mrs LD and I are NT members and this is one of the places I'd really like to see - instead of the more common palaces owned by the former rich, glamourous and/or famous/infamous.