Yes, the ride is harsh IMO. I'm on 16" wheels and its "just" acceptable for me, and pretty poor up against its competitors. For me its not just that its a bit firm, but that it bumps and crashes around to much.
I drive quite a few hire cars so get a good back to back comparison, and it lags behind the Golf, A3, Astra, BMW 1 series, Focus, but of course its all subjective and down to personal taste. My last car was a Volvo V60 in R-design spec - that was really awful, and everybody who rode in it said the same