The surfaces of the building are embellished with stuccowork, gilding, stonework, painted and frescoed walls, and polychrome coffered ceilings. Historical research, combined with restoration, has made it possible to understand that the most important construction and decorative stages correspond to three, precise historical moments. The divisions of the façade and the wooden ceilings with some of the precious polychrome decorations date from the time of the original construction at the end of the 17th century.
Further alterations, almost a century later, involved the demolition of several wooden floors and the lively polychrome stuccowork in the lobby can be traced back to this point in time. The sumptuous decorative work, which features in some rooms, characterised by gilded stuccowork, wooden panelling and mirrors, dates from the second half of the 19th century.
