The arrival window is the forty to sixty minutes a therapist needs to reach a central Amsterdam hotel or address; Schiphol is arranged separately.
Room service quotes a time; so does the house. From the moment a same-day reservation is confirmed, a therapist reaches any central Amsterdam door within forty to sixty minutes. That figure does not shift from one neighbourhood to the next. A tower beside the station, a townhouse hotel on a canal and a serviced flat in the south of the city all share it, and the office does not publish a different promise for each district.
It starts at confirmation, not at the first message. How long a reply takes varies with the evening, which is why the window is measured from confirmation. Where the reservation carries a deposit, she sets out once it has settled. A booking confirmed at a quarter past ten should therefore be pictured as a knock between five to eleven and a quarter past eleven, never at half past ten.
A reservation made ahead for a named hour works differently. She is timed to knock at the hour agreed, and the confirmation states it.
Forty minutes is a useful length of time in a hotel room. It is enough to shower, dim the overhead lights in favour of a lamp, nudge the heating a little warmer and put the room number into the thread. A journal piece, The twenty minutes before the knock, walks through that interval.
A hotel that locks its lifts at night needs the guest to meet her at the lifts and travel up together, which is a matter of timing rather than extra waiting; see keycard lift. A canal house with three flights and no lift adds a minute or two on the stairs.
Schiphol and the airport hotels sit outside the standard window. They are by arrangement, the journey time is agreed with the guest before anything is fixed, and they always carry a deposit. Nothing beyond Amsterdam is reached at all. For late requests in general, the tonight guide covers what to expect after dark.
Tonight
Name the room, the hour and how long you would like her there. The reply comes back in the same thread with who is free.