You arrive, and there is no reception
It is a house. You come in the door, your coat goes on a hook, and there is nobody at a desk to check you in because there is no desk and no one to sit at it. That catches people out on a first visit and it is usually the moment they relax.
There is one chair. It is yours for the whole appointment, and nobody is waiting for it after you.
Your part: arrive with your hair down. Bring something to drink if you are particular about it.