This can make a queen size mattress a far better possibility In the event your room is just not so spacious. Thus, Singapore standard king size mattress is 72in by 75in (180cm by 190cm). Though the queen size is 60in by 75in (150cm by 190cm). Several variations to your queen https://www.sleepspace.com.sg/blogs/news/mattress-sizes-in-singapore-the-definitive-dimensions-guide