Four-hand is one guest attended by two therapists at once; for couples it matters because it shares a price with the side-by-side format but not its shape.
Count the hands, not the guests. Four-hand describes a single person receiving the attention of two therapists together, and it is often mistaken for a couples booking because both involve two women and both cost EUR 360 an hour.
Couples run into the term in three ways. The first is by accident, typing "4 hand massage" when they meant a therapist each; the office catches that by asking who the two therapists are for. The second is by design, when one partner wants to give the other a four-hand session as a gift and sit it out. The third is a mixed evening: one partner has an hour of four-hand, then the pair stay on for a second hour with the two of you on separate surfaces. That last version is still one two-therapist booking for two hours, EUR 720, simply divided differently.
The fee follows how many therapists are working and for how long. Two women for one hour is EUR 360 whether they are side by side over two guests or together over one. That keeps changes of plan simple. A couple who decide on the evening itself that one partner should have both therapists for half the session pay nothing more and nothing less.
A four-hand booking carries the two-therapist deposit of half, always: EUR 360 ahead for two hours, EUR 540 ahead for three. It arrives inside the usual forty to sixty minutes, with the office timing both women to the same door. It has no overnight version on the ladder. And any technique on the house list can be worked this way, from sensual to tantra, since four-hand is a format rather than a technique of its own.
The four-hand massage page explains the format in more depth. If you are not sure which of the two pair formats you want, the duo massage entry sets out the questions the office will ask.