No renter will maintain a pool like you would want it to be, if at all, so you need to check in with pool maintenance companies for quotes to do ALL the maintenance, chemicals, cleaning, etc.
Another option would be to fence it off, install one of those strong covers (the kind that can support body weights if someone gets over the fence, and list it for rent without the pool - if a potential renter wants the pool open it can be an add-on.
That said, the liability factor for a rental with a pool is astronomical......make sure you have the appropriate coverage in your homeowners and absolutely get an umbrella policy.