I checked to see if there was a Standard Ebooks version, as they're generally nicer to read than Gutenberg (though translated works are a weak spot in both projects as you need the translation to fall out of copyright too).

However Standard Ebooks didn't have it. They did have a page about how they want sponsors or volunteers to help create it which I found interesting in itself:

https://standardebooks.org/ebooks/alessandro-manzoni/the-bet...