Practical information about the colloquium, the location, and accommodation in Fribourg/Freiburg can be found here.
The CUSO reimburses 90 CHF for participant's hotel and travel expenses. For more information concerning the reimbursement please contact math(at)cuso(dot)ch
If you need accomodation for the night here is a list of hostels and hotels:
Look at Tourism Fribourg for more offers.