Smart home technologies allow for monitoring of senior residents and provide large datasets that pertain to activity levels, sleeping patters and other information describing the daily activities of the residents. These large data sets have to be processed and presented in a form that is usable and accessible to health care providers who need to have timely access to the data and make decisions based on the information provided. The focal point of this study is the facilitation of participatory design that allows nurses as end-users of the application to be involved in the system design. The setting is TigerPlace, a state-of-the-art senior independent living and care facility including 32 apartments. The aim of the study is to obtain nurses' feedback as end-users in the design of interfaces for the display of monitoring data related to the activity levels and sleep patterns of older adults.