This is one of the most visually beautiful historical dramas I've ever seen. The settings are magnificent and the costumes are amazing. The acting is generally quite good and the English-language subtitles are always comprehensible, despite a few grammar errors.
However, beyond the most basic aspects, the history is twisted beyond recognition, mostly to make Sophia and Ivan III look more heroic. Sophia's brother was a wastrel, but he didn't try to have her kidnapped so he could sell her to a man he owed money, nor was he killed trying to steal from the Russian Treasury. She and her stepson Ivan the Young were rivals for Ivan III's favor and Sophia made several political mis-steps, including giving her niece jewels that belonged to Ivan III's first wife and that Ivan the Young inherited. There is also no evidence that Ivan the Younger's wife Elena practiced magic or poisoned her husband and tried to frame Sophia.
But if you watch it as historical fiction, you should definitely enjoy.
There are torture and battle scenes, but not HBO-style lingering on the details. Very mild sexual content.