The State Dining Room is a rectangular space with an eastern view of the Garden Terrace. There are eight sets of doors leading into the space. To the south, doors open to the west terrace that leads to another sunken terrace and a breezeway leading to the Garden Loggia. Three sets of doors to the east open out to the Garden Terrace that continues out into the Garden. The doors on the north of the State Dining Room lead to the Gold Room and the Main Gallery. Villa Petschek is classified as a French Neo-Baroque building, however the State Dining Room has characteristics of Louis XV Rococo style. The room is made from oak wood panels, with delicate boiserie on each panel. These panels have a rectangular pattern with arches that shape the doorways. The white plaster ceiling lifts with a slight cove from the paneling to the full height spanning over the central furniture group atop an oak French parquet floor. Wall artwork is sparse, however accents against the dark paneled walls come from the brass door hardware, lighting fixtures, and many other brass accents scattered throughout the space.
In the State Dining Room there is a simple circulation path around the central main dining table. Upon entering the room the view is a wall of windows and doors that lead to terraces, breezeways, or into other rooms for visual interest from all directions. The light of the room comes from five crystal chandeliers with a brass rigid stem and canopy, the largest of which is centered over the dining table. It is assumed the chandeliers were made of Swarovski crystal due to the region and date Swarovski was extracted from. On the two walls closest to the main entry there are four brass wall sconces consisting of three scrolling stems with foliage leading to a candelabra base and white candle sleeves. Additional light comes from the large French doors with exterior views of the changing seasonal landscape as this room hosts diplomatic guests all year round. All furniture and lighting pieces are styled after the Louis XV. Almost all of the dining chairs are replicas except for the one remaining original often situated near the room’s main entry off the Main Gallery. The Rococo chair seat and back are upholstered with a multi-colored damask with gimping along the edges. The oak structure consists of cabriolet legs and scrolled ornamentation along the crest-rail, lower rail, and apron. The dining table is simple in its oval shape and scalloped engravings along the two ends of the apron. The outer four legs are rectilinear and the inner four legs are s-curved and connect to an x-stretcher which is also ornamented. The two console tables have the same engravings as the dining table, however, this piece has a molded stone top and is more detailed in its ornamentation, including the cabriolet legs c-scroll stretchers. Along the opposite wall is a simple two-tier serving table with s-curved legs made of the same oak as all the other dining tables. The red Turkish rug placed under the dining table in the center of the room has white tassels or fringe on the two ends with a floral border.