If you're looking for somewhere very clean, very efficient, and where nothing ever goes wrong because all preventative measures have been taken to ensure that nothing can ever go wrong, Singapore may be the place for you. It's an other-worldly city, nicer than any I've ever visited. It sort of makes you afraid to touch anything or mess anything up for fear of receiving a $500 fine or a public caning, but I didn't see anyone being fined or caned so it wasn't very scary walking around sightseeing and enjoying the cuisine in designated eating spaces.
This is a melting pot for sure, and I ended up spending most of my time in Chinatown and Little India before exploring any Singaporean culture. It's hard to pass up $3 meals in the Chinese food stalls, but you can find similarly priced delicacies from local hawker stands. After just a day, you may find yourself pointing and gesturing for mysterious ingredients, knowing you'll end up with phenomenal results.
There's so much to see and do that I'm not sure three days was enough for fully uncovering this gem of a city. Fortunately, the public transportation system and flawless and will take you nearly everywhere you need to go. Unfortunately, the hostels and the people working in them are so nice that you might not ever want to leave. I'm glad I have a mini stopover on my way back to try more.