Tour a Seductive Miami Beach Apartment That Embraces Italian Modernism

Conceived by Oppenheim Architecture and Collarte Interiors, the light-filled aerie balances major works of art and design with architectural panache

Modern living room with spiral staircase, minimalist furniture, large windows, indoor plant, and artistic accents.
A sinuous staircase provides a striking centerpiece to a Miami apartment designed by Oppenheim Architecture and Collarte Interiors. Photo: Douglas Friedman

An architect and designer’s next big project can often come from an unexpected source, with social media or referrals from past clients regularly resulting in exciting new commissions. Oppenheim Architecture principal Chad Oppenheim first met a couple looking to upgrade their Miami aerie in the most unlikely of locales—deep in a South Florida swamp, when their child was a guest at his son’s birthday party, an immersive tour of the Big Cypress National Preserve.

Modern minimalist kitchen with white island, three stools, large potted plant, and a spiral staircase by large windows.
Erik Buck stools, upholstered in an Edelman suede, are set in front of monolithic travertine kitchen designed by Chad Oppenheim and fabricated by Henry Timi. Photo: Douglas Friedman

Relocating from Milan, the homeowners had purchased a penthouse unit with breathtaking views. Gutting the unit down to the studs, they recruited the firm to complete a total overhaul of the three-story space, which included replacing a bulky elevator with a sexy spiral stair that appears to float weightlessly above the floor. “I’m always trying to strip things down to their essence,” says Oppenheim, who was inspired by picturesque steps famed Miami architect Morris Lapidus would create in destinations like the Fountainebleau and Eden Roc to allow guests to make their grand entrance. “We were able to open up the space and create a very experiential way to travel between the floors.”

Modern living room with large windows, minimalistic furniture, a gray sofa, unique coffee table, and a tall indoor plant.
In the living room, a Vincenzo de Cotiis cocktail table, topped with a Jeff Zimmerman glass vessel, is paired with an Ayala Serfaty sofa and Djim Berger stools from Galerie BSL, Misha Kahn floor lamp from Friedman Benda, and Mansour rug. Photo: Douglas Friedman

With the nautilus-like staircase as the focal point, the remaining areas were left open for unobstructed access to the 270-degree views, maximizing the apartment’s potential for entertaining. “The challenge was how do we break up these spaces to make them feel intimate,” says Collarte Interiors principal Constanza Collarte, who orchestrated various conversation areas using robust Italian furnishings from Flexform, B&B Italia, and Studio 65, the latter’s Capitello chair featuring swirl details that echo the curves of the nautilus-like stair. The installation gave the designer a first-hand education in the oeuvre. “Going into this project, I didn’t know enough about Italian modernism,” she says. “But coming out the other side, it made so much sense.”

Modern dining room with a long table, surrounded by chairs, large windows, and ocean view in the background.
B&B Italia dining chairs, upholstered in a Romo fabric, surround a massive Claudia Moreira Salles dining table from Espasso that’s topped with Carlo Trucchi candle holders. The sculpture is by Nacho Carbonell and the capital-shaped chair is by Studio 65. Photo: Douglas Friedman

The design team consciously kept the furnishings to a minimum to add to the overall sense of airiness, but selected pieces that were uniquely sculptural to maximize their impact. In the living room, a plush Ayala Serfaty sofa is paired with monolithic stools by Djim Berger, playful lamps by Misha Khan and the Haas Brothers, and a striking Vincenzo de Cotiis cocktail table topped with an amber hued glass work by Jeff Zimmerman.

In the dining room, Oppenheim collaborated with Claudia Moreira Salles on an expansive dining table that is topped with a chain of noirish Carlo Trucchi candleholders; an early Nacho Carbonell sculpture providing a burst of energy and texture. “We were bouncing so many ideas off so many galleries,” says Collarte of the dynamic art and collectible design pairings that inform each of these curated vignettes. “We had a lot of input on everything to make every piece very intentional.”

Modern minimalist interior with black grand piano, white chairs, and abstract wall art in a bright room with wood floors.
At one end of the dining room, a piano is surrounded by artworks by (from left) Giulio Paolini, Enrico Castellani, Dadamaino, and Lucio Fontana. Photo: Douglas Friedman

The couple, who are heavily involved in a number of Miami philanthropies, often host concerts and receptions at home, hence, an alcove at the foot of the dining area is situated with the client’s other die-hard need for the space—a baby grand piano. However, here it’s surrounded by provocative works by Giulio Paolini, Enrico Castellani, Dadamaino, and Lucio Fontana, that transform the extremely traditional instrument into installation art.

The upstairs pool lounge, which Oppenheim refers to as “a beach cabana in the sky,” is another popular spot for entertaining with low-lying B&B Italia sofas and Hans Wegner chairs allowing for unobstructed views out to the rooftop pool, where the family often gathers to watch outdoor movies. “It feels like a gallery in some ways, because these are all museum-worthy pieces, but she really wanted to live among her art,” Collarte says.

Modern bedroom with wooden accents, large bed with pink pillows, soft gray rug, and diffused natural light through sheer curtains
A whimsical Haas Brothers stool is juxtaposed by a more streamlined Charlotte Perriand design in a bedroom Collarte Interiors principal Constanza Collarte outfitted with a Frank Gehry stool, Lucio Fontana artworks, and Mansour rug. Photo: Douglas Friedman

While overall the home is relatively minimalist, the tight edit allows the artworks to have maximum impact. “The client is very interesting in the sense that she really doesn’t want to follow the expected,” says Collarte. “It is a project that’s so subdued, but when you start to dissect it, when you look at the pieces and how they all relate to one another, it starts to be so interesting. That’s really what I loved about putting it all together.”

“Projects have a certain context, and that’s the client, the site, the place,” adds Oppenheim. “We try to take all those ingredients and create the poetry.”

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Step Inside an Art-World Insider’s Modern Apartment in South Florida

A sinuous staircase designed by Oppenheim Architecture provides a striking centerpiece to a Miami apartment with interiors by Collarte Interiors.

Photograph by Douglas Friedman

In the living room, a Vincenzo de Cotiis cocktail table, topped with a Jeff Zimmerman glass vessel, is paired with an Ayala Serfaty sofa and Djim Berger stools from Galerie BSL, Misha Kahn floor lamp from Friedman Benda, and Mansour rug.

Photograph by Douglas Friedman

B&B Italia dining chairs, upholstered in a Romo fabric, surround a massive Claudia Moreira Salles dining table from Espasso that’s topped with Carlo Trucchi candle holders. The sculpture is by Nacho Carbonell and the capital-shaped chair is by Studio 65.

Photograph by Douglas Friedman

At one end of the dining room, a piano is surrounded by artworks by (from left) Giulio Paolini, Enrico Castellani, Dadamaino, and Lucio Fontana.

Photograph by Douglas Friedman

Erik Buck stools, upholstered in an Edelman suede, are set in front of monolithic travertine kitchen designed by Chad Oppenheim and fabricated by Henry Timi.

Photograph by Douglas Friedman

A low-lying B&B Italia sofa, antique steel cocktail tables, Hans Wegner lounge chairs, and an Innerblow table by Nendo are set on a Mansour rug in the pool lounge which also features a towering Zanini de Zanine Caldas floor lamp and Lampampe table lamp by Ingo Maurer.

Photograph by Douglas Friedman

The spiral staircase hides a stunning travertine Henry Timi bar outfitted with vintage Marbella stools and topped by a Pierre Yovanovitch table lamp from R & Company.

Photograph by Douglas Friedman

An untitled 1976 artwork by Michelangelo Pistoletto adds an optical illusion to a dining alcove furnished with Katie Stout vessels and dining chairs and a Wendell Castle table.

Photograph by Douglas Friedman

A whimsical Haas Brothers stool is juxtaposed by a more streamlined Charlotte Perriand design in a bedroom Collarte Interiors principal Constanza Collarte outfitted with a Frank Gehry stool, Lucio Fontana artworks, and Mansour rug.

Photograph by Douglas Friedman

A Peter Mabeo stool in a main bath that boasts a sculptural silver travertine tub, imported from Forte Dei Marmi, Italy, with Boffi fixtures.

Photograph by Douglas Friedman

A bronze metal vase sits on the custom silver travertine vanity with Boffi fixtures in a serene bath.

Photograph by Douglas Friedman

Collarte composed the cozy library with Gaetano Pesce vases, Carla Accardi artwork, Carlo Trucchi cocktail table, an Flexform sofa.

Photograph by Douglas Friedman

Trace 5714 (2021) by Etsuko Ichikawa and a Haas Brothers mirror are installed in the powder room.

Photograph by Douglas Friedman
Modern living room with a white spiral staircase, contemporary furniture, and large windows providing natural light
Modern living room with large windows, minimalistic furniture, a gray sofa, unique coffee table, and a tall indoor plant.
Modern dining room with a long table, surrounded by chairs, large windows, and ocean view in the background.
Modern minimalist interior with black grand piano, white chairs, and abstract wall art in a bright room with wood floors.
Modern minimalist kitchen with white island, three stools, large potted plant, and a spiral staircase by large windows.
Modern living room with green velvet sofa, large windows with ocean view, and white chairs around a minimalist coffee table.
Spiral staircase with white curved design leading up from a modern room with wooden flooring and bar stools.
Minimalist dining area with a round white table, wooden chairs, and a large mirror reflecting a blurred image.
Modern bedroom with wooden accents, large bed with pink pillows, soft gray rug, and diffused natural light through sheer curtains
Modern bathroom with a round marble bathtub, large windows, a small table with flowers, and a wall-mounted shower.
Modern bathroom with large mirror, double sink, wooden accents, decorative vase with flowers, and neatly folded towels.
Modern living room with green armchairs, black oval table, bookshelves, and large window with sheer curtains.
Modern bathroom with a unique abstract artwork, a sleek black sink, a round mirror, and a light wooden chair.
Modern living room with a white spiral staircase, contemporary furniture, and large windows providing natural light
Modern living room with large windows, minimalistic furniture, a gray sofa, unique coffee table, and a tall indoor plant.
Modern dining room with a long table, surrounded by chairs, large windows, and ocean view in the background.
Modern minimalist interior with black grand piano, white chairs, and abstract wall art in a bright room with wood floors.
Modern minimalist kitchen with white island, three stools, large potted plant, and a spiral staircase by large windows.
Modern living room with green velvet sofa, large windows with ocean view, and white chairs around a minimalist coffee table.
Spiral staircase with white curved design leading up from a modern room with wooden flooring and bar stools.
Minimalist dining area with a round white table, wooden chairs, and a large mirror reflecting a blurred image.
Modern bedroom with wooden accents, large bed with pink pillows, soft gray rug, and diffused natural light through sheer curtains
Modern bathroom with a round marble bathtub, large windows, a small table with flowers, and a wall-mounted shower.
Modern bathroom with large mirror, double sink, wooden accents, decorative vase with flowers, and neatly folded towels.
Modern living room with green armchairs, black oval table, bookshelves, and large window with sheer curtains.
Modern bathroom with a unique abstract artwork, a sleek black sink, a round mirror, and a light wooden chair.