Outcall, when the room is the one you are sharing
Outcall means the therapist travels to the address the two of you are already staying at, so neither partner has to cross a city on an arrival day.
Every arrangement made through this site is outcall. She leaves from wherever she is and comes to the room the two of you have taken. There is nowhere to go to instead: the house keeps no premises at all, no studio and no flat held for the purpose, and that absence is a decision rather than a gap.
Why it matters more on a reunion
On a trip where both people arrived from different countries the same day, a journey across an unfamiliar city is the part most likely to spoil an evening. One of you has been awake since four. Bags are somewhere. Nobody knows which tram goes where. Outcall removes that entirely, and it removes the return trip as well, which is the half people forget when they imagine going somewhere instead.
What it asks of the two of you
An exact address with the floor and the room or apartment number, a line about the entrance if the street door locks in the evening, and one phone left charged and audible. That is the whole list. In a rented flat, say which of you will be standing at the door, because a building that needs a code released from inside makes that a real question. What a first message should carry is listed on the booking page.
Where she will and will not travel
Any central Amsterdam district, at the same figure and inside the same window. A shared room at a Schiphol airport hotel is possible by arrangement, with the length of that journey agreed with you before anything is fixed. No address beyond Amsterdam and those airport hotels is travelled to.