Ishka's house was described in the script of "Family Business" as: "The main room of Quark's family home is a rounded dome, in keeping with normal Ferengi architecture. The room is lined with display cases, bookshelves and holding racks, stacked with an endless assortment of pretty and valuable looking objects... jewelry, sculptures, scrolls, archaeological artifacts, you name it. There are no windows, but there are a few doors leading to other parts of the building. The doors are low and tunnel-like and even Ferengi have to stoop to get through them." 
Ishka's bedroom was described in the script as: "Ishka's dome-shaped bedroom is a stark contrast to the rest of the house. The furniture consists of a simple futon-like mattress on the floor, a chest of drawers, and a single chair."