Visible crew/equipment: When John is playing the piano, after the door opens by itself in the music room, there is a shot that revolves around him. If you look in the large mirror in front of the piano you can see the pole of the boom microphone reflected (behind the chandelier). (00:19:21)
Minnie Huxley: That house is not fit to live in. No one's been able to live in it. It doesn't want people.