i spent a few days there recently....great hotel great service and great location...i think i paid around 1300rmb not usd....the building is new and modern and the rooms are spacious....like most places in china if you want the best service it helps to speak chinese, but i imagine their english is ok...not so many europeans here but lots of wealthy chinese and russians too...
I've never stayed at the HI but the location looks nice enough. the IC is a bit expensive for china but sanya generally is one of the most expensive places to get to