A taxi is still your best bet. Cab fare from South Station will be a little less than from Logan. There are taxi stands located outside the main entrance. If you are planning to drive to Cambridge and have not experienced Boston-area driving, be prepared for a challenge. Street names change frequently and they are not often visibly marked.
Few maps indicate directions for the town's numerous one-way streets.
So stay calm, and be prepared to be lost at least once before arriving at your destination. Travel 30 yards and turn right because Brattle Street veers to the right. Continue on Brattle Street and make the first right onto Church Street. There is a parking lot 50 yards up on the left. This is the closest parking lot to Longfellow Hall and we suggest that you park there.