May I introduce you to the concept of microdistrict. That’s how the original soviet developments were planned out - every house is guaranteed to have necessities like stores, a polyclinic, a school, a kindergarden, or a fire department within reasonable distance. Usually, walking distance. Everything is pedestrian permeable, there’s public transport connecting the “sleeping districts” where there were mostly apartments to the industrial areas where the jobs were. And yeah, playgrounds in or near every building.

Jobs in the same area as apartments isn’t really happening though, office buildings and industry tends to be away.