Singapore
Singapore has been described as a playground for the rich, and it's true that the small city-state does have a certain sheen of wealth. But Singapore offers more than just high-end shopping malls, luxury hotels, and fine dining (though it's worth indulging in those a bit if you can). There is also a vibrant history and diverse ethnic quarters to discover, along with many family-friendly attractions and lovely public spaces that make exploring this slightly futuristic city worthwhile.
Singapore is one of the easiest
Singapore has an excellent public transportation system that makes sightseeing convenient and easy. Once you've gotten a sense of the metro map, you'll have no problem zipping from one part of town to the next. English is spoken everywhere, and signs are in English as well. In fact, Singapore is one of the easiest and most comfortable countries to navigate in Southeast Asia. And as long as you're not comparing prices to nearby Thailand or Vietnam, you're in for a lovely stay.