I saw it on a tv program but I can’t remember enough specific details to Google successfully.
It’s now somewhere people can hire to stay in, maybe for retreats?
It had a long history, as a sanctuary for women, maybe involving nuns, or as a hospital. It has a big central circular room, bedrooms off this room, so to get anywhere else in the building you went through this central communal room/hall.
It might be in Yorkshire?