Switzerland-based interior design studio specialising in bespoke residential renovations

 
 

Lifestyle Si is a full-service interior design studio based in St. Gallen, Switzerland, known for its poetic yet cosy aesthetic, rooted in Korean design culture and shaped by the vision of its founder, Sungeun. The studio approaches each project as a layered composition, carefully balancing atmosphere and flow, softness and form, heritage and modernity.

At the heart of lifestyle Si’s work lies an appreciation for natural luxury, expressed through honest materials, nuanced layers of light, color, and texture, and sophisticated craftsmanship. Each project is enriched with details that tell a story, from art and vintage finds to curated objects and heirlooms that lend individuality and soul to a space.

Shaped by a global perspective and a diverse client base, the studio’s multicultural sensitivity allows it to weave cultural influences and personal narratives into deeply personal interiors. Across Switzerland, lifestyle Si crafts residential spaces into poetic backdrops for everyday living.

 
 
 
 

Meet Sungeun

Kuksungeun Han — known as Si — is the founder and principal designer of lifestyle Si. Born in Seoul and now based in Switzerland, she studied interior architecture and human ecology before building her career across residential and commercial projects in Seoul, London, and Switzerland.

Drawing on a deep understanding of people and space and years of collaboration with clients from diverse cultural backgrounds, Si brings a globally informed perspective rooted in craftsmanship, cultural nuance, and poetic sensitivity. She is constantly exploring what defines a high-quality lifestyle and how authentic, poetic design can elevate everyday living.

After launching lifestyle Si in 2014 and establishing its Swiss base in 2019, she has focused her practice on creating homes that feel deeply personal and evolve gracefully with their inhabitants.

When not in the studio, Si often seeks inspiration in exhibitions, galleries, and vintage markets, or in quiet weekends spent close to nature — moments that continue to shape her sensitivity to atmosphere, rhythm, and beauty in everyday life.

 
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