The objective of the research was to assess the satisfaction with treatment among patients of the mental sanatorium by an anonymous enquiry. In the enquiry 301 patients with different diagnoses participated, incl. some who had protective treatment. The investigation was made in open and closed wards. The majority of patients, reported a relatively high general satisfaction with treatment and the care provided by health professionals and a low grade of satisfaction as regards information on the drugs they took, on their health status and with opportunities how to spend their leisure time.