I'm a big fan of infill/increased urban density in general, as long as it is ~equally beautiful to the surroundings. (Ex. live-work units can be much more beautiful than single-family homes, but 5-over-1s are usually not)
Some other topical sites I've been reading recently that I'd recommend:
https://missingmiddlehousing.com/
https://www.strongtowns.org/ (North America specific)
One quote I'm unsure about:
> [Popular housing reform] means having strict rules on parking and driving, ensuring congestion doesn’t increase.
I'm unsure whether to read this as strict rules to increase car infrastructure as housing is increased to make way for more people's vehicles, or to make sure new housing development holds steady car flow / implements alternative transportation so as not to increase the number of cars.
The first interpretation would make me concerned about induced demand.