A 74-yeаr-оld mаn whо lives in his оwn home slipped аnd fell while stepping out of the shower. He experienced only minor bruising and no significant injury. His family is concerned about his safety if he remains in his own home. He is in excellent health and can manage his ADLs and IADLs without assistance. He is an active volunteer at the local library. His family lives in another state, and he does not wish to move away from his friends. Which housing arrangement best matches his needs and is least costly?