Just to add an up to date opinion on the Pan Pacific Singapore, I have just had 3 nights there in a Pacific Club room.
The rooms are very nice, modern, well laid out with plenty of power points.
The club is excellent, and a marked upgrade from prior to the renovations. It is now on the top floor with a 360 vision of the city. Excellent service and food/drink selection with real (i.e. French/from the region) Champagne.
If I wasn't HH Diamond (Conrad next door) it would take at least half my SIN stays, but I will settle with only a few nights next year.