Finally I'm booked and ready to go, first thing in the morning.
I'm staying at hotel Caulaincourt. 33 euros a night is nice, and I'm not worried about the rooms. I stayed in a dorm room here last summer when backpacking from Barcelona up to Munchen and YAPC::Eu::2002, so I know it's a great place to stay, _and_ I how to get there when I arrive tomorrow night.