No human face is ever seen distinctly.
There is almost no speech. And while technically it (originally) is french, it is mostly for ambiance and not meant to be understood. Season 2 pushes this even further with human voices mostly mumbling.
Avoids showing brands. They are either hidden, made up, or anecdotal.
The original titles (for both series and episodes) are nearly all lowercase ("minuscule" in french), as a pun with the series name.