I read this book recently. There are many things that was not known to the public.
The authour is somewhat too loyal to Nehru and he presented him as very humble and good man though he had also pointed some of Nehru's personal things which was not in good taste but later he managed to Canonize Nehru.
If he was too loyal he would had hidden his personal matters to protect his image.
But he did both.
I am going to read his My Days with Nehru and see what more he said..
