An overnight means eight hours with a single therapist for EUR 1,250, the block travellers use between a late landing and a dawn departure.
For a hotel guest an overnight is simply a night. For a traveller it is often something narrower: the eight hours between a late inbound and a morning outbound, or the gap a rebooked connection has just opened. The house sells that block as one format. It runs eight hours, it involves one therapist, and it costs EUR 1,250, with both the start and the close written into the confirmation so nobody is unsure when it ends.
Plan an overnight near the airport backwards from the flight. Take the time bag drop closes, subtract the shuttle ride or the walk from the hotel, subtract a busy morning at security, and what is left is the latest the eight hours can finish. A departure at 07:10 with a shuttle at 05:00 points to a start around 21:00 the evening before. Put that arithmetic in the first message and the office will fit the booking to it rather than to a round number. The guide to an early flight from Schiphol works through several departure times.
An overnight is never settled only at the door. Half, EUR 625, is sent electronically once the office accepts, and the therapist sets out when that has cleared; the other EUR 625 is handed to her when she arrives, as cash, card or crypto. That holds for a first booking and a fiftieth, for tonight and for next month, and a room at an airport hotel would carry the deposit on its own account anyway. If the night is later cancelled, the EUR 625 stays with the house, a moved flight included.
Hour by hour, seven hours on the ladder total EUR 1,260, ten euros past the price of the full eight. The fixed figure reflects a night given to one booking and the following day rearranged around it. There is one limit: the overnight is for a single therapist. No two-therapist overnight exists, and a pair is booked by the hour instead. The overnight page covers the format in more depth.
One hour EUR 180 through to eight hours at EUR 1,250. Forty to sixty minutes anywhere in the centre; the Schiphol airport hotels by arrangement.