Ultra luxury 4 Bedroom Waterside Beacon St. Penthouse with direct elevator access, amazing River views, 2 Garage parking spaces and 2 private decks. Brand new construction just completed 2020, flexible floor plan and all high end finishes. Enormous family room with skylights and terrace offering incredible Charles River views and sunsets. Gourmet chef’s kitchen features Wolf/ Sub Zero appliances, 2 sinks, 2 islands, gas cooking and marble counters. Elegant formal dining room with city views, perfect for entertaining with wet bar and large balcony. Entertainment size Livingroom, library and office complete this home. Spacious master bedroom suite with walk in closet, marble bath, separate walk in steam shower. Three additional bedrooms can function as game/ media rooms. Three more full bathrooms and two powder rooms. Three gas fireplaces, laundry room, 2 washers/ 2 dryers, central air conditioning. See attached Video tour, 3D Matterport tour, floor plans & specs.