Located in the Sants-Montjuïc district, this group of flats is on the southern corner of the block bounded by Carrer de Lleida, Carrer de l'Olivera, Carrer de la Font Honrada and Carrer de Tamarit. It is a group of nine blocks of flats between partitions, each with a doorway. Rectangular in plan and with two floors per landing, the structure in elevation of each of these buildings comprises a ground floor, mezzanine, four floors, an attic and a rooftop terrace. However, these buildings stand out as the first documented example of Barcelona expressionist architecture. Each of the dwellings has the same compositional characteristics, giving rise to a unitary ensemble. The ground floor, entirely clad in limestone slabs, opens its shops onto the street through large doorways topped by lintels. For their part, the doorways giving access to the dwellings are framed by a kind of archivolt with a lintel that gives them depth. The mezzanine floor is also clad in stone and crowned with a striking cornice. The rest of the floors are clad with reddish mortar, which originally had green sgraffito decoration based on borders and geometric shapes (as can be seen in the examples preserved along Carrer de l’Olivera). The main characteristic of these buildings is the use of rectangular windows (with the exception of some balconies in Carrer de l'Olivera) and, above all, the use of locating the neighbours' staircase in triangular glazed tribunes which are visible from the street. The attic is finished with red brickwork, marking a horizontal composition that counteracts the verticality of the tribunes. This group of flats owned by Josep Masana was designed by the architect Ramon Reventós i Farrarons in 1928, coinciding with the process of redevelopment that the area of Poble Sec underwent as a result of the 1929 International Exhibition. The importance of this work lies in its use, for the first time in Catalonia, of an expressionist formal language inspired by Central European experiences in the field of mass housing. It was built in several phases between 1929 and 1930. This work is connected with the European expressionist rationalism of socialist ideology, especially with the "Hofs" of mass housing in Austria and southern Germany. Ramón Reventós, despite being a little-known architect, played an important role in the construction of the 1929 International Exposition with works such as the Venetian Towers of Avinguda Maria Cristina, the Teatre Grec, the Montjuïc Funicular, the Poble Espanyol and the Miramar Hotel. He is also the author of the Florida Hotelat the top of Tibidabo. His work is mainly Noucentista.