This is our review of “ITOMACHI HOTEL 0″ (Maps), visited in March 2026.
Nestled at the foot of the majestic Mt. Ishizuchi (石鎚山) in Saijo City, ITOMACHI HOTEL 0 (いとまちホテルゼロ) is not merely a place to stay; it is a profound architectural statement on the future of regional revitalization. Designed by the renowned Kengo Kuma, the hotel serves as the centerpiece of the “Ito Project,” a community-building initiative aimed at weaving together nature, energy, and human connection.
Architectural Soul: The Blue of Iyo Aoishi
Kuma’s design philosophy here is deeply rooted in the local landscape, drawing inspiration from the silhouette of Mt. Ishizuchi. The most striking element of the interior is the strategic use of Iyo Aoishi (blue stone), a locally sourced material formed 150 to 200 million years ago. This stone serves as the hotel’s key color and material, appearing in floors and accents to create a cooling, grounded “sense of place” that connects guests to the geological history of Ehime. The minimalist aesthetic follows a concept of “returning to zero,” encouraging a mental and physical reset by stripping away the superfluous.
A New Benchmark for Sustainability
As Japan’s first Net Zero Energy Hotel, ITOMACHI HOTEL 0 carries the highest ZEB (Net Zero Energy Building) certification. The hotel achieves an impressive energy balance by reducing consumption to roughly 50% of a typical facility through high-performance insulation and natural ventilation, while generating its remaining needs via extensive solar power. This isn’t just theoretical; the hotel functions as a vital disaster prevention base, equipped to provide power, water, and food for 800 people for up to three days. Its resilience was proven during the 2024 Shikoku-wide blackout, where the hotel maintained power through its independent microgrid system while the surrounding area fell dark.
The “Barefoot” Sanctuary for Families
For families traveling with infants, the hotel is exceptionally functional. The design utilizes “Shin-agari” (raised floors) or koagari, where guests remove their shoes upon entry. This creates a stress-free environment for crawling babies, allowing them to explore the room safely. The use of low beds further ensures peace of mind for parents worried about restless sleepers.
Thoughtful amenities enhance the stay at ITOMACHI HOTEL 0, where simplicity meets comfort. Guests are welcomed with soft indoor slippers and high-quality Hajimari organic shampoo that reflects the hotel’s dedication to natural living. Each room includes locally sourced tea and drip coffee for a quiet moment of relaxation, while a Snow Peak camping chair—an elegant nod to Japanese outdoor craftsmanship—invites guests to unwind in style, whether indoors or on the terrace.
The Standard Room, measuring 20 square meters, features a compact yet well-designed bathroom equipped with a modern shower. While there is no bathtub, the space maintains a clean, minimalist aesthetic consistent with the hotel’s overall design ethos. It’s ideal for guests who prioritize efficiency and contemporary comfort over extended bathing rituals.
ITOMACHI HOTEL 0 also offers a and a welcoming common area equipped with a fully functional kitchen (high-end Balmuda appliances), allowing guests to prepare their own meals. This shared environment fosters a quiet sense of community, ideal for remote workers, long-stay travelers, or families seeking flexibility and connection. It’s a thoughtful extension of the hotel’s design philosophy—balancing independence with the warmth of shared experience.
Breakfast at ITOMACHI HOTEL 0 is served in a bright, wood-accented dining area that embodies Kengo Kuma’s gentle aesthetic of light and texture. Large windows frame the morning sun and the surrounding landscape, creating an atmosphere that feels both serene and uplifting.
The menu highlights local ingredients from Ehime, offering freshly baked bread, seasonal vegetables, and regional specialties that celebrate the slow, nourishing rhythm of Saijō life.
Sensory Details: The “Uchinuki” Experience
The hotel brilliantly integrates Saijo’s status as the “Water City”. Fresh “Uchinuki” spring water—sourced from the underground flows of Mt. Ishizuchi—flows directly from the guest room taps. The hotel provides stainless steel bottles for guests to carry this “living water” or to fill them at the town’s many self-gushing wells. Drinking this soft, naturally filtered water is a highlight of the stay, offering a literal taste of the local terroir.
Final Thoughts: ITOMACHI HOTEL 0 is a triumph of environmentally conscious luxury. By marrying Kengo Kuma’s evocative use of Iyo Aoishi with a rigorous energy-neutral framework, it offers a stay that is both intellectually stimulating and deeply relaxing—provided you are prepared for its essentialist approach to hospitality. The adjacent “Itomachi Marche” also offers a vast lawn for children to play, including water features in the summer.
