This rare 6 bedroom duplex offering ideally located on the sought-after waterside of Beacon St does not disappoint! Enter this expansive home with oversized windows and beautiful views of the Charles River from both levels. The chefs kitchen features top of the line Subzero and Wolf appliances with an abundance of storage throughout, including a spacious pantry. Continue into a desirable open living/dining layout and complete the main level w/ a gym, two bedrooms and a secluded river-facing office that offers the ideal work from home getaway. Upstairs opens into an oversized great room with a wood burning fireplace and fully equipped wet bar perfect for entertaining. The private master wing includes his & her baths, a large dressing room with expansive closets and Charles River views. Additional features include 2 full parking spaces, elegant lobby with elevator, extra storage, and a live-in superintendent. Luxury living at its finest, this home is not to be missed.