Compared to manors, witches prefer cabins with Fifth Era interior styles... In fact, witches love any culture and fashion from the Fifth Era; they always reminisce about the era dominated by witches.
Since the portal on the ship is located in the massive banquet hall within the cabin, the banquet hall with five long tables has become the main venue for activity for witches and their followers.
Actually, this banquet hall is double-layered, with stairs leading to the upper level on both sides of the door. However, the upper level is merely a corridor surrounding the walls, where people can hold their glasses and look down at the banquet hall or enter the rooms on the corridor's other side to rest during gatherings.
When Shard appeared in the cabin, the busy young ladies gathered at the table, either leafing through the Seven Great Families documents of Miss Belindel or attending to the tedious paperwork for their respective mistresses.
