請問有坐過ktm由吉隆坡到新加坡的人關於仰鋪的問題?

你好，我是马来西亚人，看到你的发问，希望可以帮到你。你可以看这个BLOG，他写得蛮清楚的，还有＇卧铺＇的照片。
http://travelmalaysiaguide.com/singapore-kuala-lumpur-ktm-train-route/

但是我个人认为乘搭KTM前往新加坡需时很久，大概８个小时。但是搭巴士才４个半小时左右。

There are some photos in the website of KTMB.
I agree with the former message. Not to take overnight train to Singapore. It has so many stops, and you cannot sleep well. Also, the ticket is quite expensive.