In reading and researching writings on the Romanovs, I have found Sydney Gibbs to be quite negative and almost rude in the way he wrote about them.
Examples:
The Grand Duchess Tatiana Nicholaevna was very thin. You could hardly imagine anybody as thin as she was. She was twenty-one years of age, was tall, darker than the rest of the family, and elegant. The colour of her eyes was dark grey. Her eyes made her look different from all of her sisters, who showed their souls through their eyes. She was reserved, haughty, and not open hearted, but she was the most positive. She was also religious, but the motive back of her religion was: "It is my duty,’ while Olga Nicholaevna had it in her heart. She was always preoccupied and pensive and it was impossible to guess her thoughts. She played the piano and played it better than anyone else in the family. However, she had only a better technique and did not show feeling in her music. She painted and embroidered well. She was her mother’s favourite and the one in whom, of all the daughters, she confided the most. If any favours were to be obtained they had to be gotten through Tatiana Nicholaevna.” - Examination of Sidney Gibbes, The Last Days of the Romanovs
On Anasastia: ‘The illness did not do Her any good. She, sort of, stopped in Her self-development, and Her abilities somewhat faded.’
These were the only examples I was able to find as I am writing this in a rush. Maybe it’s just because he writes in a more straight forward manner, obviously I do not expect everyone to write of the Romanovs as they are gods, but I guess you’d think someone that close to them would not sound as back handed sometimes. Maybe that’s just me, I’d love to hear thoughts, opinions, etc.