The format works the same way; some specifics worth noting.
Couples massage in our practice is straightforwardly available to same-sex couples on the same terms as it is to mixed couples. Two therapists, two clients, parallel sessions in the same room. The format itself does not change; a few specifics around the booking are worth noting.
The roster note. Our therapists are female. The format we offer is two female therapists working two clients, regardless of whether the clients are female-female, male-male, or male-female. We do not have male therapists on the roster currently. This is the operational reality; if it does not match what you want for the booking, we are not the right service.
The pairing note. We pair the therapists carefully on every couples booking. For same-sex couples, we sometimes have specific recommendations — therapists who have done a lot of work with same-sex couples, who calibrate the room differently, who understand the cultural register of the booking. Mention the booking type at confirmation and we pair accordingly.
The technique note. Same-sex couples' bookings tend to skew slightly more toward sensual and tantra than mixed-couples bookings, which trend slightly more toward classical and erotic-oil. This is an observation, not a rule; book whatever technique you want.
The hotel note. Most premium hotels in Amsterdam are entirely comfortable with same-sex couples in their suites. The city's broader culture is open and there is no operational difference whatsoever in how the booking is handled. We have done many couples bookings in this format over the years; the format is solved.