How to call Singapore Hotel in English to reserve a room after 24 o'clock?

Hello, I made a reservation online for * * * (room number) of 18. 8.

We will arrive after midnight. Please keep the room for us.

I really appreciate it．

It's hard to understand each other's reply. I don't know how people will reply. I think anyone who knows a little English should understand it. If not, I'm sorry, please forgive me. And most hotels in Singapore have Chinese service. Can you ask if anyone can speak Chinese first after connecting? It would be much more convenient if there were ~ ~ ~

The hotel should check other information with you, such as name, passport number, name of the reservation person, telephone number left, etc.