The opposing views in this paragraph begin in the first sentence, where Muir says that he sat so long at the side of Calypso that he lost his hunger. In this sentence, he seems bored and tired. Soon afterwards he says that his tiredness and hunger disappeared and he felt strong and cheerful after the sun went down. At this point, we have the impression that the place where Muir is a good and invigorating place, since it had that effect in his mood and disposition. But soon after, a woman arrives with a negative view of the place that had a positive effect on Muir. These opposing views make the reader wonder if, after all, the place where Muir was sitting was good or bad. The author does this, to sharpen the reader's sense of interpretation and make each one draw their own conclusions about the place.