The building is on three floors: The ground floor, a warren of cellars and store rooms, is low; its small windows indicating by their size the lowly status and usage of the floor, above which is the double-height banqueting hall, which falsely appears from the outside as a first-floor piano nobile with a secondary floor above. The lower windows of the hall are surmounted by alternating triangular and segmental pediments, while the upper windows are unadorned casements. Immediately beneath the entablature, which projects to emphasize the central three bays, the capitals of the pilasters are linked by swags in relief, above which the entablature is supported by dental corbel table. Under the upper frieze, festoons and masks suggest the feasting and revelry associated with the concept of a royal banqueting hall.