I grew up in Soviet style housing and every apt building had a playground for kids right outside of it. Traffic really wasn’t an issue, the main roads were in f

I grew up in Soviet style housing and every apt building had a playground for kids right outside of it. Traffic really wasn’t an issue, the main roads were in front of the building and the playgrounds behind them. It would not be hard to design an enclosed communal area visible to all of the units. Lots of early suburbs had a communal design where the play area faced into the kitchens of the houses. You can easily have a family in an apartment if it has 2-3 bedrooms in it. That’s a very common design in Eastern Europe and other parts. It’s only in NA do people believe that you can only have a family in a SFH