The arrival window, read against a meeting that just ended
The arrival window is the forty to sixty minutes between a confirmed booking and a knock at your door, the same figure in every central neighbourhood.
The arrival window is the stretch between a confirmed evening and a knock. It is forty to sixty minutes anywhere in central Amsterdam, and on a working week the second half of that sentence is the useful part: the same figure applies whether your room is near the water, near the park or near the offices in the south.
What starts the count
Confirmation starts it, not the first message. On a booking carrying an advance half she leaves once that payment has cleared, so the sum named in the thread is worth sending while the two of you are still deciding what to order. An evening confirmed at 19:40 realistically means a knock between twenty past eight and nine.
Why a couple should treat it as planning time
Forty to sixty minutes is exactly long enough for the working partner to get back, shower, and stop thinking in agenda items. It is not long enough to also eat. Couples who book the hour for immediately after the last session of the day tend to find that the window does the work of the transition for them, which is one of the arguments in the page on the evening after a conference day.
What does not shorten it
Being five minutes from the middle of the city does not. An empty street does not. One figure is published for every central neighbourhood because the differences collapse the moment she is moving, and a quicker promise made to one address would only be a broken one somewhere else.
The one case it does not cover
Schiphol and the airport hotels sit outside the window entirely. Those rooms are arranged individually, with the start time and the length of the journey settled with you before anything is fixed, and half the fee settled in advance whatever the length.