Originally Posted by
redvelvetmartinis
If you don't want to venture out of the airport, there's always the Crowne Hotel.
Otherwise, there's Marina Bay Sands, the latest SIN icon with the SkyPark and the amenities of the Orchard Road shopping belt nearby.
There's of course Raffles Hotel, the grand old dame where you can will time away with a Singapore Sling.
For a more "relaxed" feel away from the city buzz, try Capella Hotel. It's on Sentosa island (about 20-30 mins away from the airport) and there are plenty of sightseeing opportunities on the island itself.
If you prefer city sights, MBS is the way to go; if you're a beach person/ prefer more historical sights / prefer things to do (like simulated skydiving), then Capella is it.
Orchard Road is on the other side of downtown from MBS, which has it's own luxury shopping mall in the property. It's not at all walkable.
Note that the CP at SIN in land side, and usually expensive for what it is. There are airside transit hotels in each of the three terminals, but not in the budget terminal.