Is the city of Berlin very liberal like most cities, or is it a rare conservative-leaning city?
Berlin is extremely liberal for the most part. Nevertheless, there are some upscale neighborhoods in the west (boroughs Steglitz-Zehlendorf, Reinickendorf and Charlottenburg-Wilmersdorf) and some Trump-style working class neighborhoods (boroughs Marzahn-Hellersdorf, Treptow-Köpenick, Lichtenberg and Pankow) and in the east.
The polling location map of the latest Berlin state election is a good litmus test:
Are the conservative parts of Berlin similar to the American working class vs. elite upscale tensions?
Where is the most conservative part of Germany located?