Depends how it is executed. I consider my neighbourhood in Western Europe a great modernist success: Blocks are mostly around 7 floors high, with access organ

Depends how it is executed. I consider my neighbourhood in Western Europe a great modernist success: Blocks are mostly around 7 floors high, with access organized vertically - each floor landing has typically 3 apartments around the lift/stairwell, so no 'streets in the sky'. Plenty of shops (and entrances!) at ground level of each block. Lots of parks, schools, trams, etc interspersed amongst the blocks. Private balconies for all.