Situated beside the storied Elyse Montmartre concert hall in Paris, France, a once-abandoned building is stepping into a new era of design and sustainability. The recently opened Elyse Montmartre Hotelis the brainchild of design studio Policronica, which has meticulously transformed the space into the 16-room hotel integrating architecture, craftsmanship, and environmental responsibility.Unlike conventional hospitality projects, where interior design often relies on multiple external suppliers, Policronica took a different path, assuming full creative and manufacturing control over every aspect of the hotels interiors. The studio designed and produced all elements in-house from furniture and lighting to the smallest architectural details like handles. This singular approach has resulted in an environment where each component speaks the same design language, offering guests an experience of seamless cohesion and understated warmth.At the core of this project lies an innovative use of eucalyptus wood, a material often overlooked in high-end design due to its classification as an invasive species. Sourced from small-scale forest owners in Portugal, this wood, commonly relegated to paper production, has been repurposed to demonstrate its potential for refined applications. By purchasing the trees at a premium compared to traditional paper industry rates, Policronica not only elevates the materials status but also promotes responsible and diversified forestry practices.Policronicas Lisbon-based workshop operates as an incubator for end-to-end production, eliminating the fragmentation typically seen in construction and furniture manufacturing. Designers, architects, carpenters, and industrial specialists collaborate under one roof, streamlining processes that would traditionally be divided across multiple suppliers. This integrated workflow reduces inefficiencies and fosters innovation in sustainable manufacturing.One of the most groundbreaking advancements introduced in this project is Policronicas development of solar vacuum wood dryers. These innovative drying chambers significantly accelerate the natural curing process of eucalyptus wood, reducing the timeframe from 18 months to just six days while ensuring stability and durability. Additionally, by maximizing the use of each tree trunk and eliminating unnecessary transportation between processing facilities, the project maintains an exceptionally low carbon footprint.Throughout the hotel rooms, Policronica tapped raw materials, such as wood, plant fibers, brass, and neutral fabrics, to form a monochromatic, organic interior that is anything but bland. Each room evokes the feeling of being at home, if one lived in a stylish Parisian apartment, with warmth and coziness right in the middle of an urban environment.For more information on the Elyse Montmartre Hotel, visit emhotel.fr, and for more on Policronica, head to policronica.com.Photography courtesy of Policronica.