In this study, the role of interior characteristics of rooms and people - things' densities in space perception were argued by evaluating the functional and perceptual qualities of 2, 4 and 8-person rooms of Zubeyde Hanim Sorority located in Ankara. For this purpose, with the scope of evaluation of interior equipment elements and architectural features of the rooms; gratitude and request status of the users and perceptual performances were measured by the help of a detailed survey. According to this, it was determined that a considerable part of the users is displeased with the inadequacy of bunk bet. al., cupboards, tables and chairs in the rooms and ask for bookshelves and shoe cabinets. On the other hand, the users interpreted three different rooms by perceiving them asunderly. Attendantly, it was cogitated that layout excursion depending on things' densities and in architectural features of the rooms were thought to be effective rather than inadequacy of interior equipment elements in different perception of the rooms. The perceptual evaluations of the rooms from positive to negative were arranged as 2-room > 8-room > 4-room. Ultimately, in the positive perception of interiors, the idea that room size and personal area average depending on things' densities are effective rather than the number of people living in the room can be asserted.