I’m looking for a beach/spa/relaxing vacation, any ideas?

We were looking at Hawaii (I’m from there so we would know where to go), or some place in Asia. We are currently living in Japan so the places here would be a bit closer than Hawaii (plus my mom is still there so a HUGE reason NOT to visit). It’s just my husband and I so I want it to be romantic not kid friendly. We wanted some place where there are nice hotels and spas and of course beaches but that is not expensive. We’ve heard Thailand is good but what about Guam or Malaysia, or any other place for that matter?

There are TONS of Getaway spas in the world check them out on this website: http://www.spafinder.com/spas/getaway-spas.jsp