Within the design, it will be easliy found that there is a repeatable object appearing on each level. This built-in furnituure certainly refers to Adolf loos's architectural language which is the way of welcoming people into the building, especially at the entrance. Instead of putting door at the centre of the entrance, providing sitting there seems to be more invited from outside looking.
The stairs illustrates the idea of "connection" in this building. It links all parts of the building both horizontally and vertically. People would have choice to go up or down when they get into the building. I guess this is the reason why the main entrance of the building has been set up on the right in terms of the direction of the slope
From my point of view, level four might be thought as the most interesting level of all that the way of defining the space. As the biggest room been set up as a double height space, people who are seating in the dinning room could look down into the main hall directly and actually see what happening there. It creates the inner-relationship between the spaces. Also, people who are walking on the stairs could see through the colums along the side of both spaces. In addition, it is interesting to find the way Loos created that how people can go to the dinning room from main hall, which people have to walk out living room first then get into next room compare to the way how people could see directly from dinning into main hall.
On the roof, it is interesting to think about the reason which Loos wanted to put the walls on half way and tried to achieve the view area as shown above. It might be said that he wanted to hide something that he didnot really want to see at that moment. Because at the time this house been built, we are not really sure about wnat was actually surrounding the building.