Meticulous complete gut renovation and a combination of Units 3 & 4 create this 31 foot wide Back Bay showplace featuring a 2100SF single-level layout, breathtaking designer style, updated structural elements with direct elevator access. Excellent location in a historical Back Bay building, close to the Charles River, Boston Garden and Common. Wide-plank oak floors, designer lighting, and built-in speakers. Large dining area and a gorgeous living room with a stunning fireplace, and bay windows. Open chef's kitchen dazzles with a waterfall island/breakfast bar and appliances by Gaggenau, Thermador, and Sub-Zero, including a 96 bottle wine fridge. The primary suite boasts Charles River views, automatic window shades, custom closets, an en suite bath, a private deck, and a sitting area with a built-in wet bar. Secondary bedrooms are both spacious, and additional baths feature upscale stone and plumbing fixtures. Electrolux washer and dryer, three-zone HVAC, and Savant smart home controls.