I plan to arrive (from Taipei) at Changi airport at about 1:00 AM local time on a weekday. Airports often have little or no place to "hang out" or snooze after arrival.
Instead of paying USD 50 or more for a hotel in the city, is there something I can do to sit and close my eyes for a few hours until businesses and other spots open in the morning? It could be in the airport, or the city, I'm assuming at least some buses run all night.
I'll just have a backpack, no need to store luggage.