Socialist housing has schools and kindergardens on large plots of land, lots of kids playgrounds between houses, a small park here and there. "Microraion" planning deprioritizes public road so every apartment house is a part of a superblock a-la Barcelona.
The downside is often that places of commerce are lacking. They have to be built separately or have first floors repurposed for commerce. I've heard that capital city of Brasilia had this problem too.
Precisely. Yugoslavia had plenty of commercial places planned. So much so that even today many of these commercial spaces remain empty. A good example of what I mean is 'New Belgrade' in Belgrade and 'Split 3' in Split.
The downside is often that places of commerce are lacking. They have to be built separately or have first floors repurposed for commerce. I've heard that capital city of Brasilia had this problem too.