Answer:
Kaynaddi here is the answer of your question
The agent is not the owner of the apartment so he will not take care of the apartment, because he isn't supposed to pay the cost of fixing damages in the apartment. To mitigate this risk renter can be asked to pay a deposit which can be adjusted for any damages done in the apartment.
A provision in the lease agreement for the annual renewal allows an incentive for a renter who is long term. Doing so will help maintain leased apartment.