Hotel Rakuragu, No matter how small, there must be a balcony/small or large building
Hotel Rakuragu, 再小都要有阳台 / 小大建筑
设计理念与空间利用：“Hotel Rakuragu” 项目最引人注目的亮点在于其对空间利用的极致追求和对城市肌理的敏锐回应。在仅有 84 平方米的狭小基地上，设计师巧妙地利用建筑之间的缝隙，以“视线穿透”为设计主题，创造了 14 间客房。这种设计理念打破了传统酒店的封闭感，通过设置朝向各异的阳台，让客人从不同的角度体验东京的城市风貌。此外，项目采用轻巧的建筑策略，充分展现了日本小尺度设计的精髓。这种将空间限制转化为独特体验的设计思路，值得我们学习和借鉴。
结构创新与立面美学：项目的精髓在于其独特的结构设计和富有韵律感的立面处理。设计师采用了带斜撑的钢框架结构，取代传统的柱梁体系，保证了阳台视野的开阔性。极小的柱梁截面隐藏在墙体内，使得自然光可以均匀地漫射在弧形墙面上，营造出通透而舒适的室内氛围。立面阳台形态的多样化设计，如同随机雕刻的白色立方体，为建筑赋予了独特的个性。这种将功能性与美学完美结合的设计手法，不仅提升了建筑的整体品质，也使其成为周边杂乱建筑群中的一抹亮色，彰显了建筑师对细节的极致追求。
室内设计与用户体验：项目在室内设计方面也极具匠心，致力于为客人提供沉浸式的东京体验。无缝空间和曲面墙的设计，模糊了室内外边界，营造出宽敞感。硅藻土壁纸的运用，不仅提升了墙面的质感，还通过微孔结构散射光线，柔化了室内氛围。浴室布局的巧妙设计，淋浴区远离开口，洗脸盆外移，充分考虑了用户在狭小空间内的舒适度和私密性。这些细节都体现了设计师对用户体验的深入思考，也使得 “Hotel Rakuragu” 不仅仅是一个住宿场所，更是一个可以让人感受到东京独特魅力的体验空间。
© 堀越圭晋
© 堀越圭晋
The project is located in Nihonbashi, Tokyo, surrounded by typical mixed use buildings in Tokyo. The site does not have a panoramic view like Jingshengdi, and the surrounding buildings lack a unified design logic in terms of height, width, material, and opening form. In order to break the negative factor of "narrow urban land use", the design team focuses on the gaps between urban buildings and takes the penetration of vision as the design theme. On this small piece of land with only 84 square meters, we need to create 14 guest rooms within a limited space.
项目位于东京日本桥，周围被东京典型的杂居大楼包围。场地没有像景胜地那样的远景视野，且周边建筑在高度、宽度、材质以及开口形式上缺乏统一的设计逻辑。为了打破“都心狭小用地”这一负面因素，设计团队关注城市建筑之间的缝隙，并以视线的穿透性为设计主题。在这块仅有 84 ㎡ 的狭小用地上，我们需在有限的空间内打造 14 间客房。
© 堀越圭晋
The surrounding buildings are disorderly and lack unified standards. Unlike common hotels, designers observe the urban texture and set balconies with different orientations for each room, allowing guests to experience the city from different angles. The final building is like a randomly carved white cube, with a rhythmic facade. The plane axis network X1-X4 is vertically connected to optimize the structural economy. After adjusting the end single span structure (axis number X4-X5), three balcony styles are formed, balancing functionality and facade aesthetics. The balcony adopts Low-E glass, with insulation in summer and winter, combined with natural ventilation design, balancing openness and comfort. During the pandemic, the design emphasized the integration of indoor and outdoor elements, allowing guests to still perceive natural light and urban atmosphere in enclosed spaces.
The building adopts a steel frame structure with slant support to replace the traditional column beam system. Flexible arrangement of columns ensures unobstructed view of the balcony. Facade balconies come in various forms, some forming triangles, while others cover the entire room. The column beam section is extremely small (beam height 300mm, column diameter 150-200mm), hidden inside the wall, allowing natural light to diffuse evenly along the curved wall surface. The curved wall of the guest room extends to the outside, blurring the boundaries between the inside and outside, creating a sense of spaciousness.
The seamless space and curved walls form the tone of the guest room. The microporous texture of diatomaceous earth wallpaper and the curved wall scatter light together, softening the indoor atmosphere. The bathroom layout balances privacy and comfort: the shower area is far away from the opening, and the washbasin is moved outward to avoid feeling cramped. This design is particularly important in densely populated office environments in the central district.
周边建筑杂乱无章，缺乏统一规范。与常见酒店不同，设计师通过观察城市肌理，为每间客房设置朝向各异的阳台，使客人可从不同角度感受城市。最终建筑宛如随机雕刻的白色立方体，立面充满韵律。平面轴网 X1-X4 纵向贯通，优化结构经济性。调整末端单跨结构（轴号 X4-X5）后，形成三种阳台样式，兼顾功能与立面美感。阳台采用 Low-E 玻璃，夏季隔热、冬季保温，结合自然通风设计，平衡开放性与舒适性。疫情期间的设计更强调室内外融合，让客人在封闭空间中仍能感知自然光线与城市氛围。
建筑采用带斜撑的钢框架结构，替代传统柱梁体系。柱子灵活排布，确保阳台无遮挡视野。立面阳台形态多样，有的呈三角形，有的覆盖整开间。柱梁截面极小（梁高 300mm，柱径 150-200mm），隐藏于墙体内，使自然光能沿弧形墙面均匀漫射。客房弧形墙体延伸至室外，模糊内外界限，营造宽敞感。
无缝空间与曲面墙构成客房基调。硅藻土壁纸的微孔肌理与弧形墙共同散射光线，柔化室内氛围。浴室布局兼顾隐私与舒适：淋浴区远离开口，洗脸盆外移，避免局促感。这一设计在中央区办公密集环境中尤为重要。
© 堀越圭晋
Small and large buildings are centered around "balconies" and form iconic images through differentiated design, while corresponding to diverse types of guest rooms. The project uses a lightweight strategy to resolve spatial limitations, reflecting Japan's small-scale design wisdom and providing guests with an immersive Tokyo experience.
小大建筑以“阳台”为核心，通过差异化的设计形成建筑标志性形象，同时对应多样化客房类型。项目以轻巧策略化解空间限制，体现日本小尺度设计智慧，为客人提供沉浸式东京体验。
© 堀越圭晋
