You can book truffle sessions in Rijnsburg through Triptherapie. They serve Rijnsburg and nearby towns like Leiden, Katwijk, Oegstgeest, and Sassenheim.
To schedule, visit the truffle therapy page to compare facilitators, check availability, read reviews, and book a home visit: Triptherapie truffle therapy.
Pick the facilitator and date that match your location and preferences, and they can come to your address in or near Rijnsburg.
Hope this helps, and good luck with your booking.