A room is defined as a space of the dwelling enclosed by walls that go from the ground to the roof or ceiling of the dwelling, of at least 2 meters and a size sufficient to fit an adult bed (at least 4 square meters).
So, the bedrooms, dining rooms, living rooms, attics, kitchens, closed terraces, and other separated spaces will be considered rooms according to the previous definition.
The bathrooms, changing rooms, hallways, and open terraces are not considered rooms even though they meet the criteria established by the definition.
Knowing the number of rooms is necessary for completing the information provided by the useful surface area of the dwelling as well as for contrasting it when the knowledge of this last variable is not precise.
[p. 59]
Categories of this variable: