I have not read whole book, because of little time in last days. But I can agree with you Greenowl. In the book one can find a lot of discrepancies. Only for example: around 1860 was Franz Joseph's Aid-de-camp not Count Eduard Paar but Count Creneville (at least If I am not mistaken). Paar became Aid-de-camp in 1886, but perhaps he joined the court just before.
You can also find very strange Paar's opinion (?) about Archduchess Sophie and her attemps take Emperor and Empress apart. Except that, Elisabeth had very initiative part in hungarian coronation (Emperor was basically only forced to do it). She was surely not only "overlooked".
And the claim, that Middleton came on visit in summer 1907 is endless absurdity, because he died even before Empress.
When one reads those lines, has very strong doubts, whether is Margutti realy author of them or from which sources he optained those 'facts' or why he fabled such stories.
But I have not finished reading, presumably it will take even few days. But if somebody finds meanwhile similar claims, I will appreciate to hear about them.
Anyway I think, that just more trustworthy are memories of Emperor's body servant E. Ketterl.