Here the building rules of the classical Baroque period are clearly visible. For example, the servants got the raised floor with the small windows. (because there were no elevators and the servants do not need large windows). The floor with large windows, the "beautiful floor" is for the resident of the rulers. Usually, it is the third floor.
Extremely recommend spending two hours in Vienna with guide Tom. He tells the stories of the city and its history in the short, interesting and elegant way. The trip starts from Stephan Platz, passes through the streets of Graben, the Jewish quarter, Am Hof and ends at Ferstel Palace and the Mekler cellar.