neutral, detached, and objective, not involving or showing emotions/feelings or human personality and not influenced by one's own connections or opinions;
e.g. Her ability to take an impersonal view of events makes her an excellent judge in court.
(adjective)
broadly, lacking distinctive characteristics or qualities, especially referring to an organization or a physical place;
e.g. He struggled to find the impersonal building, since it looked the same as the other buildings on the street.