When the church is burning Goya's portrait of Lorenzo in the square, the painting is flipped facing right, then left, then right again.
When Goya unveils the unflattering portrait of the queen, she is deeply offended. Actually, queen Maria Louisa liked that portrait so much that she made Goya the first court painter.
Typo: During the credits one of the crew members (Tania Arias) is listed as "Assitsant" to Mr. Hausman instead of Assistant.
The film starts in 1792 with the inquisition examining Goya's etchings "Los Caprichos". In fact, the etchings were not created until 1797.
When Ines is kneeling in Lorenzo's office, the mic is visible at the top of the screen, above and to the left of her head.