...
Warren Hall is about a 10-minute walk from the Hotel Shattuck Hotel Plaza and the Downtown Berkeley BART train station. There are multiple ways to walk to Warren; the simplest is probably to walk North 1/2 block on Allston to Shattuck, then turn left on Shattuck (you'll be walking north, with the Berkeley Hills will be visible on your right), then turn right (toward the hills) on Hearst Ave. towards Oxford.
...