One of the people in Europe who was particularly fond of Hamilton was the sometime French Foreign Minister, Talleyrand.

There's a widely repeated but possibly apocryphal tale that Burr attempted to call on Talleyrand in Paris who rejected the carte de visite with a notation "Hamilton was a friend of mine". Like many things said of Talleyrand, one can be skeptical as to whether this happened, but it likely did reflect the kind of thing that Talleyrand would like the world to have thought of him, and does reflect what seems to be genuine affection.

Talleyrand has nice things to say about Hamilton in his memoirs (which are not notably generous to other people). In general he disliked Americans, and they disliked him-- Hamilton was to some extent a kindred spirit, by by turns clever, ambitious and scholarly. And most importantly, Hamilton spoke good French, and the two men shared a taste for good living.

There's evidence that their discussions during Talleyrand's American sojourn (1794-96), when Hamilton tried and failed to get him an audience with President Washington, influenced Hamilton's economic thinking.