This extraordinary 4BD/3.5BA residence with direct elevator access, 2 garage parking spaces, offers a prime Back Bay location on the 2nd block of Commonwealth Ave. The beautifully renovated two-level condominium offers a single-family feel with noticeably wide hallways, expansive open living spaces and wonderful natural light. Spanning the full length of the fourth and fifth floors, the residence boasts marble floors, bespoke designer details and custom storage throughout. The grand entertaining level features a dramatic entry gallery, a massive great room with a stunning mosaic fireplace and a full wall of windows overlooking the Commonwealth Ave Mall. The large study could easily work as a media room or fourth bedroom, and a regal powder room completes the level. Above, the breathtaking owner's retreat offers outstanding wardrobe storage, a fireplace and a custom marble spa bath. A second suite is joined by another bed and bath. Smart Home Technology w/ remote shades. Rare offering!