How does the author use setting to describe General Zaroff's "civilized world"? Support your answer with evidence from the selection.

When Sanger Rainsford first catches sight of General Zaroff's home, he sees "a lofty structure with pointed towers plunging upward into the gloom . . . a palatial chateau." This sounds like a very luxurious and civilized home on a remote island, a place for a wealthy individual who values privacy.
When he is shown to a bedroom, Rainsford sees "a huge, beam-ceilinged bedroom with a canopied bed big enough for six men." He is provided evening wear from "a London tailor who ordinarily cut and sewed for none below the rank of duke." 
The dining room where Zaroff entertains Rainsford for dinner is described as having a "medieval magnificence" with "oaken panels. . .[a] high ceiling. . . [and] vast refectory tables" befitting a wealthy, civilized individual who takes pride in providing an opulent setting for his guests.
The table's china, silver, crystal, and linen are the accouterments of a sophisticated host, and Rainsford enjoys a well-mixed cocktail, champagne, and filet mignon.  The quality of the home, its furnishings, and the hospitality Zaroff extends to Rainsford give the impression of a civilized world until Zaroff describes the barbaric hunt in which he expects Rainsford to participate as the quarry.