the Sirens sit in a green field and will "warble" a man to death with the sweetness of their song. Circe doesn't give specifics on how this happens but warns Odysseus that these creatures are surrounded by dead men's bones. Circe also tells Odysseus to stop up the ears of his men with wax, lest they be lured to their deaths.
The description that would improve the setting in the passage above best is "Eating dinner one chilly evening, my master and I...". Because it will set the mood of the retelling of his master's story.
