It's still really difficult to manage. Someone has to manage the staff. Verify what they're doing etc. You have to do the hiring. Help them buy the stuff they need etc. It's less involved than doing it yourself, but for a large enough household, it becomes fairly involved and like a job.

There's also more of a lady and servant relationship in a one-to-one scenario. That's extremely uncomfortable for me. In a hotel, it's a job and some chains actually pay their employees quite well, making it a true profession. A professional job where no one is under you per se or serving you explicitly is much better than having people follow your every whim directly. There are buffer layers here and the hotel can very much say no and protect their employees if the guest goes too far.