Constance

Thirty, the roster's senior head, and named like a promise she keeps: Constance is the steady booking, exactly right every time. Trilingual, Oud-Zuid.

Ask the phone team who never generates a complaint, a surprise or a wrinkle and the answer is immediate. Constance has been at this longer than most, and the years have distilled her rather than dulled her, every motion in her session earns its place, every minute lands where she intends, and the whole hour has the quality of a thing done ten thousand times and still done with attention. She moves between French, Dutch and English without seams, and lives on the quiet side of Oud-Zuid. First-timers often ask for her by name; so do the guests whose evenings must not go wrong. Reliability sounds unglamorous until you are lying under an hour of it.

Constance decides which bookings she takes and may decline any of them; she sets the limits for what a session includes, says what they are, and may end a visit at any point, as the terms set out.