It might sound a little unprofessional, but we simply couldn’t come up with a single umbrella term for “collective apartment buildings with a reduced number of housing units”. The urban villa comes closest to the subject matter, but for many people the urban villa is quintessentially a detached building, usually surrounded by its own piece of land. There is also the Italian version – palazzina, which actually also means “small block” (specifically, the apartment building is a palazzo in Italian).