Whatever the merits of nature and nurture, the directly proximate environment does shape the person. The traffic noise, the chaotic sidewalks, the scents of fried foods, the clouds of secondhand vapes.
Wealthier place aren't marked by these objective phenomena, and their residents seem to have a different general personality. Persistent correlation can indicate partial causation. Though having a lot of money can do other things to protect one's personality from the vicissitudes.
This is perhaps why, during the republic, they looked across the river and built apartments there. (Though curiously, they appear not to have extended the tram lines.) There is a famous local novel about the old architecture of the city, the protagonist, a romantic madman, looks in horror through is telescope at the characterless housing growing on the other side of the river. But there was green space, and planned development, and quiet. These things don't cost that much, except in the context of the band of detritus around urban areas, where square footage is costly, neighborhoods are ad hoc, etc.
One doesn't seek out sane housing for the sake of sane housing, as reasonable as that might sound. The housing shapes the mind, and the sensitive spirit. One turns into a bit of a troglodyte among the detritus, vaping, etc.
To their credit, they make it a point here to build sufficient housing for the population. I've seen this in several post-communist states. Whatever the many sins of the authoritarian state, it publicly preached a strong social ethic, and that ethic has persisted somewhat -- a very valuable residuum.