Ok
I stayed here for a week on business recently. I've stayed in a few other W's around the world and rank this hotel as poor / average in comparison. Simple customer features missing like room slippers. The bliss toiletries are minuscule compared to the larger bottles available in other W's. I ate at the restaurant one evening and it wasn't at all busy. The menu was very short with a choice of only 6 entrees. Not what I would expect from a W. 
In terms of hotel decor it's very poor compared to somewhere like the W Hong Kong or W Downtown New York. No sense of luxury or upmarket at all. 
The bar / living room area was very busy and with only 3 staff at the most serving, long waits for drinks were experienced. The Upstairs bar was devoid of any atmosphere.
The hotel is situated in reasonable location but right next door are 2 other Starwood properties. Seems strange by Starwood to cluster like this. Therefore, not much competition on accommodation rate locally but maybe that's their intention.
I used the complimentary chauffeur service which was good. The hotel staff where generally genial enough but lacked any vim or real enthusiasm for their job. All in all a very ordinary experience at this W when compared to same Hotel brand elsewhere and doesnt stand comparison with W Hong Kong in any way whatsoever.