Your paperwork controls your rights and responsibilities. Have an attorney review the papers asap.
The answers given are limited to the facts as given and presumed by the answer itself. Without seeing actual written documentation or having a conference to more fully explore the issues, this short answer has only limited application. Make sure to seek legal counsel and provide all documentation to get assistance in making informed legal choices.
Your lease agreement may control some of this, BUT, if the property is not as required by the terms of the lease, you DO NOT want to accept it and make sure that you address this in writing and document this as clearly as you can. If you do a walk through, video tape it if you can and show the defects. Make sure however, that you are not latching on to excuses not to rent from buyers remorse or that you found another place. This can backfire badly.