It looks fantastic!
On a similar note although a bit less spectacular, my mate’s gran lived in a huge Victorian farmhouse which I think they rented (tenant farmers) but owned the contents. The woman and her husband had become too frail to move about the house so they had moved downstairs to live in the kitchen and adjacent room. The rest of the house had been untouched for about 20 years, and was absolutely chock full of amazing old everyday stuff – strangely going back much more than 20 years.
Wardrobes full of 60s clothes, 20 year old toothpaste on the bathroom shelf and so on. Also stuff like enormous Welsh dressers full of silver dinner services; and ancient electrical appliances some still in use. A very early freezer and steam iron I remember. It really was like a National Trust house. My mate and his family were dirt poor though.
The outbuildings had been full of a compelte steam powered Victorian cast iron style grain processing setup with leather belts driven off shafts in the loft and all. The granddad had sold it all for an undisclosed but apparently very large sum. She died after I’d mostly lost touch with the mate, I hope they were looked after.