I thought Ben Franklin was well-liked in France.
Individual Americans, especially revolutionary thinkers, were respected in Europe - Franklin was arguably probably the way that many people in eighteenth century Europe became aware of the American colonies.
But the idea of the colonies claiming to be an independent state...you can see the contempt with which this was treated in contemporary
and Revolutionary France, and to some extent it persists today: remember Dominique de Villepin's dismissal of the US as 'having no history' in 2003, and the modern European (particularly French) attitude of treating the US and Britain collectively as 'the Anglo-Saxons' and effectively considering them as the same state. The balance of power has shifted from Britain to the US, but you get the impression that a lot of people don't actually separate the two in their minds. That eighteenth century image of 'some slightly wayward Englishmen' persists across large parts of the world.