Corinna Kretschmar-Joehnk & Peter Joehnk


For more than four decades, Corinna Kretschmar-Joehnk and Peter Joehnk have been shaping the hospitality industry through JOI-Design, one of Europe’s most established and respected interior architecture and hospitality design studios. Since founding the company in 1984, they have worked on more than 1,000 hotel projects worldwide and helped define the guest experience for some of the industry’s leading brands, earning over 150 international awards along the way.

What makes their story particularly remarkable is not only the scale of their work, but the fact that they have built the business together as life partners and creative partners for more than forty years. Their journey has included both successes and setbacks – including navigating periods of significant adversity and rebuilding when things did not go according to plan.

Today, JOI-Design is led by a new generation of partners, yet Corinna and Peter remain deeply involved as senior advisors and brand ambassadors. At the same time, they continue to launch new ventures, from hospitality consulting and leadership communities to initiatives focused on the future of sustainable hospitality.

At The Lobby, Corinna and Peter bring a rare long-term perspective on entrepreneurship, creativity, resilience, and partnership. Their story is not only about building one of hospitality’s most influential design studios, but also about sustaining a shared vision through decades of industry change, personal commitment, setbacks, reinvention, and continued curiosity. Few people can speak with as much experience about what it takes to create something enduring – and why the journey is rarely as straightforward as it looks from the outside.