[omegant]

Could it be this one?

https://househistree.com/houses/the-bend

https://goo.gl/maps/NKpxM7P3hG17vWYf9

Edit:

I didn’t see the mark before ( I did not search it ) Wyntoon https://goo.gl/maps/kHGj8D6dwppCNxd4A

[saalweachter]

It looks like there are a couple of more boring, more modern houses on the estate now, along with the "Bavarian village" along the river.