Reddit reviews Inside El Barrio: A Bottom-Up View of Neighborhood Life in Castro's Cuba

The demographic transition in Havana in the years following the ouster of Batista resulted in many of the homes of the wealthy being occupied by the families of those who were servants; the Revolution legalized those former servants' ownership as the years progressed. A fascinating and accessible book on the Urban development of Cuba is Henry Louis Taylor, Jr.'s "Inside el Barrio"

Well, I think you need to understand the potential bias those Cubans may have. IIRC most of those Cubans are comparatively wealthy families that left after the Batista regime was overthrown and they nationalized their businesses. In other words, many left before actually really experiencing living in the socialistic Cuba. For a down to earth analysis of how everyday Cubans live, I'd strongly recommend Inside El Barrio.