Fair housing laws prevent property managers and and real estate agents from deciding for you which neighborhoods are 'safe'., however there are resources available that provide information on crime rates. See below.... more
Is it central AC and does your lease make any exception to what the Landlord will and will not be responsible to repair. You did not give enough info.
I suggest you read your lease, and call or go to city hall to check on the local tenant's laws.
If you find it is an item that the Landlord is responsible for, then you can have it repaired and follow your local laws regarding withholding of rent to cover your costs.
Do not do this without making sure you are following the terms of your lease and local ordinances.... more