Multifamily housing is not terribly popular here in New England, mostly because developers are cheap ass bastards and skimp on noise proofing. When my partner was renting in a two-family house, we could hear the landlord's child running, yelling, screaming, and dropping things. It was hell. It was one of the primary motivations for us to get our own house. My only experience with good multifamily housing was in Estonia, where the walls were thick and didn't pass sound at all.
Row houses are an interesting solution as long as there is a 30 dB or greater sound attenuation between apartments and a 90-minute firewall between them. Row housing is also interesting because it allows for the inclusion of a garage and charging infrastructure beneath the house, as well as a space to store home-scale batteries charged by your rooftop solar panels.