How can I tell the front desk in Japanese if I want to stay in the hotel for one more night?

If you want to stay in the hotel for one more night, you can explain your requirements to the front desk. Here are some possible Japanese expressions:

1. "Hello, I want to stay for another night. Do you have a vacant room? "

2. "Sorry, I found that I need to leave the hotel later tomorrow. I want to stay for another night. Do you have my room? "

3. "Hello, I am very satisfied with the service of the hotel. I want to stay for another night. Do I need to make a reservation? "

Please note that you'd better contact the front desk in advance to ensure that the room is available and can meet your needs.