It served the purpose in that particular time period, interesting it remained in production for so long, from 1948 to 1990.
The model shown in the photo is a 1984 model, I think they've improved the looks somewhat over the years, but it still has the flat-panel type doors. And still is ugly!
As I recall, many years ago (maybe decades ago) either Motor Trend or Popular Science crowned that model Citreon as the "Ugliest Car In The World!!