The Indian nationals aged 29 and 30 were in transit in Singapore.
Accidents happen every few months in the area, said a nearby stallholder.
The bus had lost control on a winding and dark road, said the police.
Others believe that it's only a bad habit when used in professional or formal settings.
Each floor cost between S$18.4 million to S$18.7 million.
It has a lengthy 89 years and 11 months left on its 99-year lease.
The 63-year-old says he sleeps in the corridor to avoid conflict with his sister, who suffers from depression.
She was trying to identify the host and shake hands with him first, she explained.
The 40-year-old Singaporean man will be brought to court on Monday (9 June).
The woman was allegedly seen arguing with security officers and hitting the check-in equipment.