Conversation so far:
What was Warsaw like for E.T.A. Hoffman?
In Warsaw, E.T.A. Hoffmann found the same atmosphere he enjoyed in Berlin, renewing his friendship with Zacharias Werner, and meeting his future biographer, a neighbour jurist called Julius Eduard Itzig.

Question: What was he known for
Self-contained rewrite: What was E. T. A. Hoffmann known for in Warsaw?