Up on the 20th floor where the ceilings are high, the windows are enormous and the views are spectacular, Residence 20D at The Clarendon has been sold.

The lobby at The Clarendon at 400 Stuart St. in the Back Bay looks great any time of year. During the winter, it shines with fires blaze in stunning fireplaces here and in the building’s inviting library. In December, there is a holiday tree, decorated by Winston Flowers, holding court with ornaments matching the golden onyx floors, a trademark of architect Robert A.M. Stern. And soon, it will reflect the oncoming beauty of spring.

William Montero of Gibson Sotheby’s International Realty told a recent visitor that a cruise ship provided the Stern’s inspiration for the architectural design. With every luxurious amenity and impeccable service offered to those who live here, the metaphor is apt.

When one of the sought-after corner units here hits the market, even other building residents are interested. Up on the 20th floor where the ceilings are high, the windows are enormous and the views are spectacular, Residence 20D, a brilliantly sunny south-facing corner condominium, was for sale. It didn’t stay on the market for long, selling on Jan. 17 for $2,646,250.

The new owners will be able to enjoy an open living area, light oak floors, a granite and stainless steel chef’s kitchen, two bedrooms and two-and-a-half baths in 1,439 square feet of living space.

Montero said when the home was on the market, “It’s pretty spectacular. You can see the Hancock Building and the sunset through these windows. And in the nighttime, it’s so nice.”

At the dining room table, the seat near the corner of the window walls is the most coveted for the views. The rectangular table there now, seating four, is perfect for the current homeowners; however, there’s room for a round table in the space that would enable more diners to admire the vistas.

Steps away, the kitchen’s ivory granite peninsula and sculptural faucet are beautiful to behold, illuminated by natural light from the kitchen window. Two seeded glass pendant lights above the peninsula provide light in the evening. High-end stainless appliances, including a Miele five-burner gas cooktop, a Miele oven and GE Profile microwave, make meal preparation a delight.

The Sub-Zero refrigerator with two freezer drawers and Miele dishwasher are hidden behind paneling that matches the dark wood cabinetry. A SubZero wine cooler serves well for entertaining. A cable hookup allows the homeowner to connect a small TV.

The living area was furnished while the home was on the market with a large sectional sofa, a piano, a pair of stylish leather chairs and a big flat screen on the wall.

“She’s (the former owner) had some really nice parties here,” said Montero.

When guests are “in the house,” there’s room for their coats in the closet near the unit’s smoky blue entry foyer and on the other side of the foyer, a powder room, done in dark and light marble, assures their comfort.

The home’s two bedroom suites are on opposite sides of the foyer, assuring quiet and privacy. A huge window highlights the guest bedroom with smart draperies striped in the same smoky blue as the foyer. Shades are controlled electronically. An en suite bath designed in neutral tones of marble sports a tub/shower with a rain showerhead.

The master suite is suffused with morning sunlight. Homeowners can close the blinds electronically if they want to sleep in or watch the flat screen TV on the wall opposite the bed. The view from the master bedroom is incredible, taking in Boston Harbor and Georges Island, the tower at Thomas Park, churches and homes of the South End and the Quincy gas tanks. A custom closet and another walk-in closet with built-ins just for shoes are perfect for wardrobe storage.

Sumptuous and spa-like in gold onyx and Calacatta marble, the en suite master bath holds a deep soaking tub. A shower behind frameless glass has a rain showerhead and body spray. A wall of three mirrors conceals the medicine cabinet. Two square sinks set in the onyx vanity allow both members of a couple to get ready at the same time.

The previous homeowner, who is a talented designer, created this home’s exquisite beauty. The living space is flexible and can be customized for the lifestyle of the next homeowner.

Located in the heart of the Back Bay, The Clarendon is a high-performance high-rise building registered with the U.S. Green Building Council with LEED Silver Certification. As well-appointed as it is green, the full-service building at 400 Stuart St. offers many amenities, including a doorman and 24-hour concierge, additional storage downstairs, a private Equinox fitness center for homeowners, a lovely library with a marble fireplace, a children’s playroom, video-enabled conference room with coffee served all day, a common outdoor roof deck with grills and lounge chairs and valet parking in an underground garage.

It is close to restaurants and the fashionable shops on Newbury Street and Copley Place as well as all the cultural attractions of the Back Bay, South End and Theatre District. There is easy access to MBTA Green Line, Orange Line and Back Bay Commuter Rail Station. And for those who need to drive, it is convenient to the Massachusetts Turnpike and Route 93.