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The ILL is dedicated to helping its visiting researchers to make the most of its facilities. Neutron beams and instrument access are provided free of charge for proposers of accepted experiments.

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User guide

User Club

The ILL User Club provides online access to all the information and administrative tools for our scientific visitors, presented in a user friendly environment.


Visitors participating in experiments will generally be accommodated in the onsite Guest House, or in the Residence Marie Curie, a couple of tram stops away.

For room reservations and modifications, please do not contact the Guest House directly, as reservations and modifications can only be made through the ESRF or the ILL. If you are coming for an experiment you must register your visit via the User Club. You will receive confirmation of your registration by emai, so check for any errors.

You will receive your booking confirmation from accommodation(at) You can check the status of your accommodation on the User Club (visible once your booking is confirmed).

The price per room per night, if you're not reimbursed, is:

  • 38.38 Euro (breakfast and tax inc.) for a single room;
  • 31.56  Euro (breakfast and tax inc.) per person in a twin room.

Users receiving reimbursement of expenses: the costs of the room and breakfast will be paid directly by the ILL for the nights covered.

Users not being reimbursed by the ILL, or extra nights: guests will have to pay their stay directly at the Guest House.

N.B.: Outside the Guest House Reception opening hours (Monday to Friday: 07.00 - 20.00, week-ends and public holidays: 07.00 - 12.00), the room key will be given to you at the Site Entrance, together with other useful documents/information.

Guest House phone number: +33 (0) - Fax: +33 (0)