Conrad Centennial Singapore
Note: Article updated to a more professional one in 2013. Stayed here in 2010.
A big, but great business hotel with all the 5-star services you need. The staff is top professional and everything works as you would expect. Comfortable bed and separate shower, but, unfortunately, also chargeable internet as this is a standard in Conrad hotels.
Finally, worth to mention the great location in the business and shopping area of Marina Bay.
My opinion: Great experience.