I stayed there a few months ago. Have the highest status in IHG but nothing in the ambassadors program. Booked the cheapest room, and they said it was "upgraded." Not really sure. It's a nice property but a little inconvenient if you wanna be able to just walk out to the beach and swim. It's on a rocky outcrop.
I prefer the Holiday Inn in Pattaya if you're trying to be IHG branded. If partial to staying at the Intercontinental, I liked the one in Hua Hin.