Estate/house managers are a very real thing, especially at the high end.

It can vary from basically part time concierge work (get the beds made, and make sure that the fridge is full when I arrive), all the way to full-time management of a property including managing additional full-time staff (maids, chefs, gardeners, etc).

I only brushed against it in being part of the yachting world, but it is fascinating how much money people like this absolutely blow away on making their lives slightly more convenient.