Reserve
Spetses II · Tickets

Recovering Our World.

Five days of talks, ritual, music and gathering, with a special event on Thursday 13 May, Beyond the Self: Accessing the heart of the world.
Poseidonion Grand Hotel, Spetses, Greece · 10–14 May 2027

Dates
10–14 May 2027
Venue
Poseidonion Grand Hotel
Residents
4 nights · all meals
at the Poseidonion
Ways to join
Retreat Pass · Resident Pass
Thursday Day Pass
Ways to Join

Join the gathering.

Join us on Spetses for all five days.

Early bird price valid until 31st December.
Retreat Pass
5 days, lunch included.
€1,750
  • The full five-day programme
  • Thursday special event, Beyond the Self: Accessing the heart of the world
  • Lunch included throughout the retreat
  • Accommodation and dinners are not included and are arranged separately with the hotel
Pay in Full, €1,750 → Pay in Two Instalments →

Two instalments: €875 now, and €875 on 15 March 2027. Second instalments will be collected on 15 March 2027. Starting January 1st the new prices will apply. The Retreat Pass including lunch will be €2,250.

All prices are per person and include VAT. Lunch is included in the Retreat Pass, including student/practitioner places. Accommodation and dinners are not included; arrange these separately with the Poseidonion Grand Hotel.

Concession Places

Retreat Pass, student/practitioner: €950.

We hold a limited number of places for students and practitioners at €950, including lunch. To apply, email us with proof of eligibility, such as a student card or proof of your professional practice. Once we confirm your place, you pay by bank transfer, in full or in two instalments of €475: the first when your place is confirmed, the second by 15 March 2027. If you book after 15 March, the full €950 is due at once. Accommodation and dinners are arranged separately with the hotel.

info@onesanctum.org
Sponsor a Place

Offer your gift.

Give any sum you wish towards a place on Spetses for someone who could not otherwise come. Your gift goes to those who ask us for sponsorship to attend.

Offer Your Gift

Seeking sponsorship yourself? Write to us at info@onesanctum.org.

The Most Complete Experience

The Resident Pass.

Live the retreat from within, with a few extra treats.

From€4,495per person · 4 nights · all meals
I
Stay alongside the facultyAt the Poseidonion, for four nights with breakfast, lunch and dinner.
II
Welcome dinner with the facultyOn the opening evening.
III
An intimate session with the faculty member of your choiceIn a small group. Places are first come, first served.
IV
Reserved seatingAt every talk and at the Thursday special event, Beyond the Self: Accessing the heart of the world.
V
A welcome giftA treat from One Sanctum to you.
VI
Closing celebration dinnerOn the final evening.
Come Together

Bring someone you love.

Share a room and each of you saves more than €1,000. Some experiences are meant to be lived side by side.

Resident Pass Deluxe Garden and Partial View room at the Poseidonion
Deluxe Garden & Partial View
Shared or single
Shared, per person€4,495
Single occupancy€5,500
Available
Shared room, per person
Pay in fullPay 30% deposit
Single occupancy
Pay in fullPay 30% deposit
Sharing? One of you can pay for both places at checkout.
Resident Pass Superior Garden View room at the Poseidonion
Superior Garden View
Shared or single
Shared, per person€4,665
Single occupancy€5,835
Available
Shared room, per person
Pay in fullPay 30% deposit
Single occupancy
Pay in fullPay 30% deposit
Sharing? One of you can pay for both places at checkout.
Resident Pass Sea View and Tower room at the Poseidonion
Sea View & Tower Rooms
Shared or single
Shared, per person€4,730
Single occupancy€5,965
Available
Shared room, per person
Pay in fullPay 30% deposit
Single occupancy
Pay in fullPay 30% deposit
Sharing? One of you can pay for both places at checkout.
Suites & Other Rooms

Looking for something more?

Suites, apartments and other room categories at the Poseidonion may be available on request, including the 1 Bedroom Suite, La Cupola Suite, the Pool Suite and family apartments. Please write to us and we will find the right fit.

info@onesanctum.org
Payment Plan

Pay in full, or in three parts.

You can pay the full amount when you book, or choose our payment plan: a 30% deposit to secure your room, then two equal instalments on 15 January and 15 March 2027, taken automatically from the card you book with. If you book after an instalment date, that instalment is due with your deposit. Choose Pay in full or Pay 30% deposit on your room card above.

Deluxe Garden, shared€1,345 + 2 × €1,575
Deluxe Garden, single€1,650 + 2 × €1,925
Superior Garden, shared€1,395 + 2 × €1,635
Superior Garden, single€1,755 + 2 × €2,040
Sea View & Tower, shared€1,420 + 2 × €1,655
Sea View & Tower, single€1,785 + 2 × €2,090

Prices are per person for the full five days and include VAT, four nights with breakfast, all meals and the Resident Pass. Accommodation and meals are provided and invoiced by the Poseidonion Grand Hotel; One Sanctum collects payment on the hotel's behalf.
Greece's climate resilience fee is not included. It is charged per room per night under Greek law and paid by you directly to the hotel at check-out.

Beyond the Self poster, Thursday 13 May 2027, Spetses
Thursday 13 May 2027 · Day Pass

Beyond the Self.

Accessing the heart of the world

Expanded states: applications for mental health and collective recovery

A day of conversations on medicine for our times: psychedelic research, ancient ways we can learn from, ethics, the edge of life, and everything in between. The first day of its kind in Greece.

Day Pass€650
Student/practitioner · limited places€350

The Thursday programme is included in every five-day pass. A limited number of student/practitioner Day Passes are available at €350. For a student/practitioner place, write to us.

Book Your Day Pass →
Questions & Requests

Anything we should know?

Booking is direct: choose your pass above and pay securely online. Write to us here about suites, student/practitioner places, dietary or accessibility needs, or any question at all. We read each note personally and reply within two working days.

What you write here is read personally. It is how we begin the conversation.
Residents: we will write to you before the retreat to arrange your faculty session.
By sending this, you agree to be contacted by One Sanctum about this retreat.
We use your details only to arrange your place. For Resident Passes, we share them with the Poseidonion Grand Hotel, which invoices you directly.

Thank you.

Your message has reached us. We will reply within two working days. In the meantime, if anything urgent arises, please write to info@onesanctum.org.

Travel Insurance

Protecting your journey.

We warmly encourage every guest to take out travel insurance that covers cancellation, ideally with "Cancel For Any Reason" (CFAR) cover, so that your travel and booking are protected whatever life brings.

Refund Policy

Transfers, not refunds.

Due to the structure of our event and the many moving parts that make it a singular experience, we are not able to issue refunds for registrations. We understand that life happens, so to accommodate change, registrations are transferable.

Please write to us at least seven days before the start of the event for any transfer requests. Thank you for your understanding.

With love, The One Sanctum Team

A Note From Us

If you are reading this, something has brought you here. We trust that. We build these gatherings for the people who feel the pull, and we look forward to meeting you on Spetses.

Questions? Write to info@onesanctum.org