Rates were around the $370 USD mark the last time I checked for a weekend rate. I was unable to find any discount codes or other discounts.
More irritatingly, if you want to cancel a reservation, there is no easy hyperlink link to do so from the reservation email. It actually requires a phone call or an email to the hotel. You wouldn't know this unless you needed to cancel.
The Westin Singapore is quite close, as is the Fullerton Bay Hotel if you wanted the experience of staying in the area, dining in the Marina Bay restaurants, but across the inside of the bay.