If you need some help to book a room, please contact the organizers of the event. We'll help as much as we can.

Some link to the hotels go thru Booking.com. We have an agreement with this company (which uses Perl a lot) and for each night booked from their site the association Mongueurs de Perl gets a few euros. It's the same price for you. It helps the association.
So of course it's up to you, but think about it.