The balcony upstairs is not closed, and my floor is wet because of the rain, but the owner upstairs has not moved in yet. What should I do? Should the property be managed?

Hehe ... You may not have made it clear:

1. The closure of the outer balcony is the owner's own business. Because the upstairs owner has not yet moved in, the rainwater discharge caused by the use reason is ruled out; But it is also possible that the upstairs balcony is blocked, causing rain leakage;

2. So you have to determine which part is leaking rain;

You may have sealed the balcony and spread the floor on it? Is there a sewer in this room? If so, how was it handled later?

4. The property can definitely be managed, and the key is whether to charge again;

5. Call them for help.

I hope I can help you and wish you peace.