This chapter analyses the influence of the sharing economy upon the design of hospitality spaces from the specific point of view of the interior design. In particular the analysis is dedicated to describe how the impact of the web platforms on the hospitality based on the sharing of spaces and services—especially AirBnB for the global relevance—are transforming the hospitality system based on hotels and hostels not only introducing new formats and new concepts in this field, but also stimulating a relevant afterthought of the interpretation of hospitality. In the contemporary society, collective spaces are considered very relevant to civic, architectural, urban and morphological richness of a contemporary city. In particular the spaces for ...