Nudity was part of the story, and the importance of the scenes was also one of the reasons why Anya agreed to do them.
For her, letting someone else portray the character of 'Yennefer' was not acceptable, and she did her best to do all the nude scenes herself.
Anya has the perfect boobs, ass, and pussy from the movies and series.
However, the frequency of nudity in Episode 5 clearly shows how it can be really unnecessary a lot of time but it still deliberately involved in it.
She really looks like every other neighbor girl, but when you google her name, you see the point.
Watch: Anya Chalotra explains her character of Yennefer in a Featurette Anya also went on to describe the reasoning behind doing it herself and how best to film the scene without making her uncomfortable.