上海naive理想国是余留地designRESERVE团队为品牌创作的第三个空间，前两家店分别位于北京CBD郎园和秦皇岛阿那亚。每一个设计的出发点，都是从场地的“不理想”出发。三个项目如同三部曲形式的小说，既有截然不同的场景和情节，也有贯穿呼应的人物和主题。 余留地团队将修复街道的公共性作为设计的出发点。 首层空间体现了理想国作为文化机构的开放性，室内空间不足百平方米，呈拐把型。长的一边是书架和共享桌，短的一边是吧台和卡座。空间整体被明朗的珊瑚红色调笼罩着，与室外街区建筑的大面积灰色调背景形成反差。余留地有意将书架做成墙体构造的一部分，墙既是厚重的，也是柔软的。陈列的图书陷入墙身，形成如龛一般的微空间，使步入的读者有种被拥抱感。 在余留地的设计中，贯穿的是探寻亲密的尺度。 二层空间，也称“author's room”，则是对作者内心世界的一种想象。二层空间私密性的极致，是嵌套在书房里的“浴室”。这是一个半封闭，胶囊形的房间，与书房隔着一层天鹅绒软帘。内壁镶嵌着白色带黑纹的马赛克瓷砖，工艺做法在外滩源的历史建筑里能找到很多先例。 文化空间的本体和传播媒介的客体之间共生与转换关系，也是余留地团队创作“naive理想国”系列时始终关注的主题。
The "naive IMAGINIST" at Rockbund is the third venue finished by designRESERVE team for the brand, with the other two located in Beijing CBD and Aranya Seaside. The three projects in different cities, like a trilogy, each distinct with its own plots and scenes, while sharing spirits of the “naive IMAGINIST” brand. The initiative of designRESERVE is to restore the value of street as the center of community life. The bookstore and café occupy ground floor with L-shaped plan layout. The long wing is lined with bookshelves and shared reading tables, while the other side features coffee bar and alcove seating. The overall space is immersed with warm brick red tones, in contrast to vast grayness of surrounding buildings. designRESERVE constructs an internal facade with curved bookshelves like folding scroll. A series of alcoves on the wall provide readers semi-private spaces, while shared tables are where people come together for reading and drinking. Therefore, as most projects by designRESERVE, the spatial design of naive IMAGINIST addresses intimate experience and tries to guide individuals to capture the moment of enlightenment. The second-floor space, known as "author's room", portraits ideal living scenarios for writers, who maintain privacy while staying not far from public life.Embedded in the study, a semi-enclosed area called "bathroom" crystalizes the idea of private domain on the second floor. The capsule-shaped space is adorned by white mosaic tiles inlaid with black mosaics. In the center of the room lies a cast iron white bathtub filled with books and hangs a mirror reflecting the audiences. Through the project, designRESERVE explores the intriguing relationship between the subject of cultural space and its projection in mass media.