I think it can be hugely healthy (depending on the couple/circumstances) to maintain different homes.
Fine for Harry to go to a hotel should he need space - if true. He has said that he suffers from mental health issues after all.
But he has been at great pains to point out that his wife has had issues too. I hope he has made sure she is in a good space or has help on hand when he needs alone time.
I would say that about any couple with children.
And I hope she can bob off on her own when or if she needs space. In my experience, although I’m from a different generation and then some, mums didn’t often get the luxury.