Like others have said, there is that rust issue to consider with Hyundai, but if you aren't worried about that possibly happening in 10 years or so, it may or may not be a big deal to you.
So far as the car itself goes, for the price, that isn't too bad, for a 2 or 3 year old car in that class. If it was under 60k miles/100k km's, that would be a swell bonus IMO. Those Sonata's actually stack up fairly well against their competition, I've driven a rental just like that, and having not been in a Hyundai since a high school friend had one of the old Pony's, I was shocked at how far they had come.