Business Services at Singapore Changi SIN Airport
At Terminal 1 - in the Transit Hotel on level 3 at Departure Transit Lounge East; tel. (65) 6542 5538.
At Terminal 2 - in the Transit Hotel on level 3, at Departure Transit Lounge South, tel. (65) 6542 8122.
At Terminal 3 - in the Transit Hotel, at Mezzanine level, Departure Transit Lounge North; tel. (65) 6507 9788.
For Airport & Airline lounges, go to 'Terminal Map' and scroll down to the detailed text.