Singapore is the easy entry into Asia: everyone speaks English, it's spotlessly safe, the food is world-class and cheap, and NUS and NTU are elite universities that actually mean something on a CV. You get the culture and energy of Southeast Asia with none of the logistical chaos - trains run on time, tap water is drinkable, nothing gets lost in translation.
The honest catch is the price tag. This is one of the most expensive cities on earth, and rent will eat the biggest chunk of your budget. But it's also the perfect launchpad for weekend trips to Bali, Bangkok and Kuala Lumpur, and a genuinely different life for a semester. It's for the student who wants Asia without roughing it.
