It is stupidly easy there. Check the link below, search away. Find the apartments blocks near your hotel and walk right up. Don't be shy
http://go141.com/en/
How many hours? doesn't sound like enough time. If I was stretched in Singapore I'd go to Geylang quickly.Edit: P.s, I also have a couple hours to kill at Singapore airport in the middle of the night, any suggestions?
Have fun.........