I had a King Superior room which was lovely - thick carpet, big bed - but I'll know next time to ask for a room with direct sunlight. That's my only quibble from my three-night stay: both the staff and the central location are excellent, and there's plenty of car parking available.
Note that the shower is over the bath so if you're six-foot or taller, you might have to bend down a bit to get under the showerhead. Also, the bath is slippery but you can ask for a non-slip bath mat at reception.
Breakfast was an option of cooked or continental; I had both during my stay and they're both really good.
My primary reason for visiting Rotorua was to go to the Polynesian Spa, which is literally just across the road from the Sudima. And even though the hotel is next to Rotorua's main road, I couldn't hear any traffic from inside my room. I'll definitely stay here again.