These are common in north Europe, and many places in northern Europe are nice, but it's in spite of this building style rather than because of it. The problems are:
* As a resident the grass is useless. You cannot use it like a garden because it's not yours. You cannot put garden furniture there or plant things. Sitting there feels weird because all the neighbors can watch you from above.
* It doesn't work as a park either. People will not feel comfortable walking around or picnicking on these bits of grass, because they are too small and clearly belong to an apartment building.
* They turn into parking lots, because people want parking more than useless bits of grass.
The traditional closed city block structure is better and very popular. Building around the perimeter right against the street and a shared space in the middle.
These are abundant in Germany, but the green that grows between them isn't exactly a pleasant sight. They are not so much used for the greenery but as a compromise between natural seepage and vehicle compatibility.
That seepage is important because any sealed off surface area increases flooding risk downstream. Of course nobody really cares for that, but the sealed surface also determines your utility bill for wastewater treatment, and people quite certainly do care for that.
* As a resident the grass is useless. You cannot use it like a garden because it's not yours. You cannot put garden furniture there or plant things. Sitting there feels weird because all the neighbors can watch you from above.
* It doesn't work as a park either. People will not feel comfortable walking around or picnicking on these bits of grass, because they are too small and clearly belong to an apartment building.
* They turn into parking lots, because people want parking more than useless bits of grass.
The traditional closed city block structure is better and very popular. Building around the perimeter right against the street and a shared space in the middle.