This paper presents an analysis of two short-term care facilities with support of Actor-Network Theory with the aim to reveal performative processes in different networks in buildings in use. The two facilities differed in architectural design which was expected to influence the care model and organisation. One facility was larger and accommodated four patients/residents in double-rooms together with permanent residents who stayed in single-rooms. The other was smaller and accommodated only short-term care in single-rooms. The study revealed that the latter received more care-demanding people than the other. The size and the type of patients/residents influenced the social environment. The larger one was more busy and lively than the smaller. However, the analysis did not show any difference in quality of care or ambiance. Both facilities were valued as either good or bad by different residents or staff members. The study concludes that therapeutic values and outcomes are defined and redefined in the ongoing performances of everyday interactions.