One message is the whole of it: the hotel area, the session you want, the hour you want it. The reply agrees that hour with you in the same thread.
Three things move a booking along: a message, a confirmation, a knock. The first belongs to you, the second puts the hour in writing, and the third comes forty to sixty minutes after she sets out, anywhere in the centre. Nothing in between asks you to leave the room or ring anyone.
Write whenever the thought arrives. Ideally the room number is already in front of you, but if you are still in the air, still in a queue at check-in, or still waiting for a room to be made up, send the message anyway and say so; the hour can be agreed now and the number added once the key is in your hand. Guests at the Schiphol airport hotels are asked to write a little further ahead, since those visits are by arrangement and the journey time is agreed with you before anything is fixed.
The reply gives you a name, the time she expects to reach your door, and a plain answer about the session you described. If the therapist you asked for is not free at that hour, the reply says so in those words, and you either choose someone else or pick another hour.
She comes up to the room number you gave, as any visitor to a hotel guest does. Every building keeps its own rules for visitors. If yours asks guests to collect visitors in the lobby, or you would simply rather walk up together, put that in your message and the evening starts downstairs instead.
The balance is settled at the start and then not mentioned again. Every figure is a euro figure; card and crypto both work, and cash in another major currency is accepted once the exact amount in it has been confirmed to you in writing before she sets out. Plans slip in this city: a dinner overruns, a call from another time zone lands at the wrong moment. Write into the same thread as the evening shifts, and a later start on the same night can usually be agreed.
The quickest confirmations come from messages that answer the obvious questions before anyone has to ask them. Something along these lines works well:
“Good evening. Hotel near Rembrandtplein, room number to follow. Tonight at 23:30, ninety minutes, sensual. One therapist, English. Paying by card.”
Five short lines, and nothing left to clarify. If you are unsure which technique you want, describe the evening instead, quiet, long, a first time, and a suggestion will come back with the reply. Leaving out the hotel's name is perfectly fine: the district now and the room number later are enough to bring her to the right door.
Both work, and they suit different guests. Writing on the night itself is the usual pattern, and bookings made well after midnight carry the same rate as those made at dinner time. Writing a day or two ahead makes sense in three situations: when you want one particular therapist, when two therapists need to arrive together, and when your hotel is out by Schiphol and the journey has to be agreed. An advance booking is confirmed the same way and then held with half the fee, and it can be moved once, to a date within fourteen days, by writing into the same thread more than a day before the booked time.
You can name a therapist from the roster pages, and the reply will either confirm her or tell you plainly that she is not free then. You can also leave the choice open. A sentence about the evening, and perhaps a language you would rather speak, is enough for the reply to suggest two or three profiles worth reading, and the choice stays with you.
Say so in the very first line. Four hands on one guest are charged as two single hours for every hour on the clock, a couples session with a therapist each as four, and either way they want clear floor on either side of the bed. Mention the room type, a standard double, a junior suite, an apartment living room, and the reply will tell you honestly whether two therapists will fit before anything is fixed.
The room needs less than most guests expect. Raise the heating a little, since oil work is far more pleasant in a warm room than a cool one. Choose the bedside lamp over the ceiling light. Lift an open suitcase off the floor beside the bed. If the lift only moves with a keycard, or the building has an intercom instead of a desk, mention it in the message so the final minute of her approach is planned rather than improvised.
Nothing in the conversation has to identify you. There is no account to create and no form to complete, and the thread holds only what you decide to put in it. The house does not contact your hotel and nobody telephones the room. Rates sit on each therapist's profile and the deposit terms on the cancellation policy, which keeps the booking conversation itself short.
Half the fee confirms a booking before she sets out, a first booking included, and what is kept on cancellation follows the notice you give; a returning guest's same-day hour or two is paid at the door. Booking terms.
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.