Along the Charles River at Arsenal Yards - Hampton Inn & Suites Watertown Boston. Nestled among the shops and restaurants of Arsenal Yards, our hotel offers quick access to I-90 and is just 10 minutes from Harvard Square. Downtown Boston attractions, historic sites, and more are only 20 minutes away. Access the beautiful Charles River Bike Path, less than a mile away. Our meeting rooms make us a great spot for events and meetings.