This study aimed to understand the perceptions and experiences of middle aged and older adults with intellectual disabilities regarding living environments of their residential facilities. Face-to-face interviews were conducted with 12 middle and old aged individuals with intellectual disabilities who had lived in facilities for more than one year. The data were collected at four residential facilities where the participants were residing from early-August, 2015 to mid-February, 2016. For data analysis, conventional content analysis was performed using transcripts of face-to-face interviews, researchers’ observation notes, and transcripts of interviews with facility workers. Throughout the analysis, four categories and eleven subcategories were derived from the data. The categories are as follows：‘living community where care and discomfort coexist’, ‘feelings of ambivalence towards roommates(psychologically close roommate, distant roommate)’, ‘reliable staff members but uncomfortable sometimes’, and ‘diverse and useful services but unfulfilled needs.' Based on the results, several suggestions were presented with an intention to contribute to improved living environments and quality of life of middle-aged and older adults with intellectual disabilities living in residential facilities. In addition, implications of the study were explored with regard to social work education focusing on the ethical practice with people with disabilities in residential facilities.