I think it's well researched and interesting book but as I'm a sucker for Renaissance history I didn't find anything new or any exciting discovery.
Renaissance for a great time for art but it's also a very violent time with a war or a sack every other day and it's something I studied when I was 8 years old.
As for the slavery in Florence it's a maybe as Florence didn't have any ports and it would have been quite a problem for slavery.
Renaissance artists worked for people who are terrible if we judge them using our moral terms and that's a sort of miracle because we've got some of the greatest masterpiece in a dark and violent age.
I found this book interesting but I don't agree with the author views because we have to face what was and we cannot think that Alessandro Borgia or Ludovico il Moro were contemporary men. They were full of contradictions and they were people living in a specific age.
All the rest are hypothesis and maybe.
I recommend this book with all the issues because it's an interesting read but I think there are some issues.
Many thanks to the publisher and Netgalley for this ARC, all opinions are mine.