We have set aside a number of rooms on a first-come first-serve basis in the conference hotel Radisson BLU. The rates include breakfast; porterage is extra. Deadline for getting these rates is September 07.
We have:

To get these rates, mention "SPEED 2009" when making your booking.

For alternative accommodation we refer to the official Berlin webpage: Berlin tourism where you can find information about hotels and guest houses of all categories; information about Holiday apartments is also available. There are several hotels close to the conference site.