Directions from Harvard Square to Marriott Hotel
30 minutes.
Return to Harvard T station. Take any INBOUND train (Braintree or Ashmont) 5 stops to Downtown Crossing. Change to Orange Line in the direction of Forest Hills. Go three stops to Back Bay Station. Go upstairs to the main Back Bay Station/Dartmouth St. entrance. Walk outside to Dartmouth St., turn RIGHT and walk to Stuart St. Turn LEFT on Stuart St. Marriott Hotel will be ahead on the left.