Berlin is one of the most exciting cities in Europe at the moment, and is a regular stop on most college student's European tour. Lower Saxony is just a short train ride from Berlin. The environment is diverse and interesting, as is the economy. The experience with another CDS program demonstrates that region-specific programs are rewarding for all involved. Regional government money might be available, and one reaches businesses on a more personal level.
Regions usually take great interest in such a program.
The German partner organization, the Carl Duisberg Gesellschaft, maintains a regional office in Hanover, which will provide additional support and networking opportunities.