A therapist each, two sessions in one room
Two therapists for two guests costs double the shared couple hour, with two sessions running alongside each other and finishing together.
A therapist each means two women and two sessions running in the same room at the same time, one for each of you. Because two women are giving up the same stretch of their evening, every hourly length costs twice what the pair of you would pay to share one of them, and the eight hour version is a block sum of its own, listed on the profiles rather than here.
Why couples on a short trip choose it
Because the two of you finish together. With one therapist the evening has halves, and whoever has already had theirs spends the rest of it in the room reading the pace. That suits some couples perfectly. On a last night before two departures it suits almost nobody, which is why the two therapist arrangement is most often booked there.
What it requires
Two women free for the same hours on the same evening, which is a smaller set than one woman free, and it narrows as the date approaches. Name two from the roster and a third as a fallback, and say explicitly in the first message that a therapist each is what you mean.
Two things that cannot change at the door
A booking for two therapists cannot become a booking for one when she arrives, and a booking for one cannot become two. Decide at least a day ahead. Each woman also sets her own limits for her own session and neither speaks for the other, which the questions page covers in full. Every two therapist booking carries half the fee ahead whatever the notice given.