I really enjoy the TV show Escape to the Chateau. A lot of couple buy an old run down French chateau and move in with their two kids. Each episode is roughly them doing up a part of it. Often with ideas for making money out of it.
Very much light entertainment, but it's eye opening how significant of a restoration and maintenance burden it is.
I guess nowadays one would not need to employ as large a retinue… but you don’t get to tax the local villages anymore. Seems like a wash.