All of your ideas are good, although the beaches in Singapore are kinda pathetic and the better (east coast) islands of Malaysia are pounded by monsoon rains this time of year. In Thailand, Krabi is currently at the top of my heap for great beaches and scenery, and there are cheap direct flights from both Bangkok and Singapore. Koh Samui is also very nice (just steer clear of Chaweng), but flights cost a lot more due to the Bangkok Airways monopoly. Bali might be a nice option, flights from Singapore are fairly cheap.
Cambodia seems very popular with Koreans, so she could probably score cheap flights there, but there's not much in the way of a beach scene (although I hope to be proved wrong next week in Sihanoukville!).
Vietnam is also an option, eg. Nha Trang or Phu Quoc, although I have no personal experience of either. The north (Hanoi, Hue etc) will be chilly this time of year, so you'd need to head down south.
jani
All of your ideas are good,
All of your ideas are good, although the beaches in Singapore are kinda pathetic and the better (east coast) islands of Malaysia are pounded by monsoon rains this time of year. In Thailand, Krabi is currently at the top of my heap for great beaches and scenery, and there are cheap direct flights from both Bangkok and Singapore. Koh Samui is also very nice (just steer clear of Chaweng), but flights cost a lot more due to the Bangkok Airways monopoly. Bali might be a nice option, flights from Singapore are fairly cheap.
Cambodia seems very popular with Koreans, so she could probably score cheap flights there, but there's not much in the way of a beach scene (although I hope to be proved wrong next week in Sihanoukville!).
Vietnam is also an option, eg. Nha Trang or Phu Quoc, although I have no personal experience of either. The north (Hanoi, Hue etc) will be chilly this time of year, so you'd need to head down south.