✔ 最佳答案
1. The answer is no.
As the proper way to address the dispute, you should provide a notice to the landlord regarding the withholding. At the same time, you should secure the amount in dispute separately (such as a cashier's cheque).
2. Yes. Depending on the lease, usually landlord bears all maintanence responsibilities. If the repair is necessary, then the landlord should be responsible.