Step into refined luxury through your private entrance at 411 Commonwealth Ave or be greeted by the doorman at 409 Commonwealth at the Bradley Mansion, a landmark concierge building with a grand mezzanine lobby in the historic Peabody & Stearns Mansion. Inside, this exquisite unit presents the original Music Room reimagined as an opulent oval living room with stained glass windows and intricate ceiling details. A private terrace overlooking Marlborough Street offers a perfect setting for entertaining. The front-facing primary suite, with its fireplace, soaking tub, and infrared sauna, enjoys views of tree-lined Comm Ave. The modern, spacious kitchen includes 2 Sub-Zero refrigerators, 2 dishwashers, and gas cooking. The lower-level family room opens to an enclosed blue stone patio, complete with grill and outdoor fireplace, accompanied by two additional bedroom suites. Discover unmatched luxury and timeless elegance in this Back Bay masterpiece. Three garage parking spaces included.