What is the setting of Book 4 of the Odyssey?

Can you please elaborate on the setting of Book 4 of the Odyssey? Are we talking about the physical environment or the social and cultural context in which the story takes place? Are there any specific locations or landmarks mentioned that are significant to the plot or themes of the book? How does the setting contribute to the overall narrative and character development in this section of the epic poem? Additionally, are there any parallels or contrasts between the setting of Book 4 and the settings of the other books in the Odyssey that are worth noting?