250 Market StPortsmouth, NH 03801 Phone: +1 603-431-2300Fax: +1 603-431-7805Toll Free: +855-434-0494 Hotel Website Classification 7 Superior First Class Commission Rooms Rates 10% 194 $389-$779 (USD) Hoteliers! Is your information accurate? Update Here Sheraton Portsmouth Harborside Hotel Location & Neighborhood Downtown waterfront, busy harbor; location in historic downtown - 45 MI, 45 min from Manchester/Boston Rg airport. 50 MI from BostonNearest Cross Street: Market & Deer St