brb - adding Rudie to the list of historical figures I will defend until the end.
As an art historian this was a very useful book if you want to analyse the Rudolphine art production. It was set up in a clear way, complete with sources and pictures. This was more or less my introduction to Rudolf.
The book however is set up like an argumentative structure - it serves a purpose of re-evaluating Rudolf as a mad king (made me think of Richard III: Brother, Protector, King by Chris Skidmore). Because of this structure, I can imagine this book doesn't work for most casual readers. Personally, I also struggled with the whole Habsburg Europe of the 16th century - as a Dutch art historian studying the Dutch 17th century, the wars and the lineage was hard to follow.