Oscar Lucien Ono of Maison Numéro 20 has transformed this Madrid residence into a celebration of Spanish heritage and contemporary luxury with a sophisticated interplay of patterns, textures, and décor
In Madrid’s distinguished Almagro neighbourhood, lush trees line streets that exude quiet sophistication, whispering tales of 19th-century grandeur. Once a favoured enclave of the city’s high society, this elegant quarter of the Chamberí district continues to captivate visitors with its Neo-Gothic and Neoclassical façades, inner courtyards, and the gentle rhythm of a bygone era.
Rising five storeys amid this rich architectural heritage is a restored 19th-century building nestled amongst upscale restaurants, cosy cafés, high-end art galleries, and independent design shops. Its classical façade features ornate wrought-iron balconies, stained glass, and bow windows on every floor, lending a distinctly Parisian touch to the streetscape; while inside, marble staircases and classical ornaments grace the palatial space.
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Above Oscar Lucien Ono, founder of Maison Numéro 20
The third-floor residence serves as a pied-à-terre for American homeowners who divide their time between Palm Springs and the Spanish capital. The transformation of the apartment–nicknamed “Santa Engracia”–was entrusted to Oscar Lucien Ono, founder of the celebrated Parisian design studio Maison Numéro 20, previously involved in the building’s restoration.
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“The clients fell in love with our work and gave us carte blanche to imagine the universe of the space,” Ono explains. “Having already worked on the building’s renovation for a developer, we knew the volumes, light, and architectural potential of the space perfectly. It was an opportunity to continue that story through a bespoke project on a more intimate scale.”
Spanish harlem

Above The large gallery entrance, featuring noble parquet flooring, luxurious de Gournay wallpapers, and shimmering antique sconces
The apartment’s permeating characteristic is its masterful fusion of Spanish heritage, deeply rooted in honouring Madrid’s rich architectural and cultural legacy, as Ono strived to fulfil the homeowners’ vision of “a ‘little Spanish palace’ with an authentically Spanish soul.”
Throughout the residence that sprawls 2,960 sq ft, the design narrative reflects this cultural sensitivity. From the large gallery entrance, a foundation of beige and ivory wall tones and noble wood flooring leads a carefully orchestrated sequence through rooms that flow fluidly together, offering both privacy and conviviality.
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Above Hand-sourced antiques paired with custom made armchairs and contemporary furnishings add layers of cultural narrative

Above Layered richness amidst gold accents from the Hamilton Conte coffee table and a custom rug produced by Ulgador
To the left lie the intimate quarters: bedrooms, office, and bathrooms. To the right, a progression of social spaces unfolds–two lounges, the dining room, and the kitchen, where the cultural dialogue manifests most dramatically. Conceived as an Andalusian patio, the bright, open space is punctuated by graceful signature arches that echo the architectural language of Spanish palatial design.
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Chinoiserie charm

Above The custom gilded glass folding screen is the pièce de résistance in the apartment

Above Parisian artisan Ulgador’s masterpiece exemplifies the overarching theme of decorative poetry

Above The pattern was reinterpreted in the rug, creating a ‘cast shadow’ effect on the floor
At the project’s inception, the homeowner presented Ono with a single vase that would become the design’s North Star. A ceramic piece adorned with greens, pinks, terracotta, and blues, it established both the colour palette and aesthetic direction for Santa Engracia.
“She loves flowers, birds, and ornaments,” Ono recalls. “This simple vase served as our initial inspiration and guide to harmonise the different spaces throughout the project.”
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Above A progression of social spaces unfolds, where the cultural dialogue manifests most dramatically

Above Hand-painted wallpapers with flora and fauna motifs create vibrant yet serene backdrops

Above A balance of decorative richness where every detail tells a unique story
Having built a reputation for creating interiors that bridge historical reverence and contemporary luxury in private residences, hotels, and boutiques worldwide, Ono achieved harmony within maximalist splendour for the “palacio español” through a sophisticated interplay of patterns, textures, and decorative elements that could easily overwhelm in less skilled hands.
“Balancing the decorative richness–with so many textures, wallpapers, and fabrics–while creating harmony in such a large space within our more contemporary aesthetic was a major challenge,” Ono shares. “However, by understanding the client’s style and wishes, this dialogue between their very personal desires and our design philosophy gave birth to a project where every detail tells a unique story.”
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Building upon the neutral-toned foundation, the vase-inspired accents bring elegance and a fresh touch while respecting the Spanish soul. This palette provides the perfect canvas for an extraordinary collection of handpainted wallpapers from prestigious houses including Schumacher, De Gournay, and Rubelli–floral and nature motifs beloved by the clients, creating vibrant yet serene backdrops that envelop each room in sophisticated pattern play.
Natural light flows through the apartment’s bow windows, casting warm glows that shift throughout the day. This ever-changing illumination reveals new perspectives on the eclectic mix of antiques and bespoke furnishings.
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Above Natural light casts ever-changing illumination that reveals new perspectives on the eclectic mix of antiques and bespoke furnishings

Above Artist Maria Torroba’s historical portraiture anchors the quiet study room

Above Manuel Canovas wallpaper and custom-made curtains with Nobilis fabric
Amidst gold accents from chandeliers to carefully selected lamps, custom fabrics from renowned houses like Nobilis and Gaston y Daniela complement the layered richness through silk fabrics, velvets, damasks, leathers, and shagreen.
Furthermore, marquetry details and hand-sourced antiques provide historical gravitas that speak to Spanish craftsmanship and tradition. Manises porcelain, with its deep roots in Spanish ceramics, appears alongside hand-selected vintage pieces that add layers of cultural narrative.
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Above Schumacher wallpaper dresses one of the bedrooms in a rosy blush pink

Above An antique sconce with gold accents complement the layered richness through silk fabrics, velvets, and damasks

Above The adjacent wardrobe room with an Eichholtz chandelier and custom-made wardrobe with Gaston y Daniela fabric
The living area, featuring three distinct atmospheres, houses the apartment’s pièce de résistance: a custom gilded glass folding screen created by Parisian artisan Ulgador, exemplifying the overarching theme of decorative poetry.
“What makes this piece special is how its pattern was picked up and reinterpreted in the rug, creating a ‘cast shadow’ effect on the floor,” Ono elaborates. “This subtle interaction between the screen and the rug brings a visual poetry and unique harmony to the space, making it my favourite element of the project.”
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Credits
Photography: Manolo Yllera







