Here are the two hotels right in Concord:

• Concord Colonial Inn
      (978) 369-9200
• BEST WESTERN at Historic Concord
      (978) 369-6100

And a B&B:

• North Bridge Inn
      (978) 371-0014

Larger hotels along Route 128

• Courtyard by Marriott, Waltham
      (781) 419-0900
• Embassy Suites by Hilton, Waltham
      (781) 890-6767
• Holiday Inn Express, Waltham
      (781) 890-2800