The usual dramatic liberties have been taken, of course, in things like condensing characters and events, but it has an authentic feel and shows a good deal of respect to its historical source material. The costumes and sets are just beautiful (we'll forgive a few wonky cravats and collars).
I'm surprised by how much I like Michael Douglas in the title role, though he's a little too serious most of the time. Since all the other characters are dialled to 11, it makes for a curious contrast since we're used to seeing Franklin as the stand-out wit. Hopefully he warms up!
Beaumarchais is delightfully camp, and Lafayette is entirely charming, spilling over with teenage enthusiasm and earnestness. Louis XVI tinkering at his workbench was a 11/10 detail. Vergennes is subtle and sensitive.
All in all, a very enjoyable viewing experience so far.