I arrived in Singapore just about an hour ago and I'm now sitting in the Hotel Transit Lounge as its much nicer then the Skyview and as a Priority Pass Member I have access to about 5 diffrent lounges in SIN. They have a nice Buffet at the Transit Lounge and Free Wifi & Showers.
The World/Sky Club next to my departure gate in NRT was very nice, but I did not bother taking a shower there as I rather do it in SIN as I am spending the day here in SIN and flying out on tomorrows flight.