Not too bad if you get an overnight bus and manage to sleep on it for a bit.
I used to be a courier for weekend trips to Paris by bus for 'Sun' readers who had paid £5 for the privilege. Believe me that was some special sort of torture when wedded to the fact that I was the only courier of about a dozen who spoke French fluently so when the shit hit the fan which it did fairly frequently , it was me who always had to shovel it!