HELP: Burst Pipe

To make a long story short I am going to give you the headlines - We live in Atlanta, GA

We had a pipe burst in a rental property, which we found out about l last night but must have been going on for a week or more as the tenant went on vacation and didn't notify anyone, which may cause 2 feet of drywall to be torn out from the entire house.  We have a water evacuation team in place  and it will get diagnosed tomorrow to see if we need to have the drywall cut out. 

Do I have to provide alternative housing for them?  If so, do you have any suggestions?  I was thinking and extended stay hotel.  

2.  From where I am standing this seems like it is going to be a long drawn out process with an unhappy tenant.  He does not have renters insurance and wants everything replaced because he thinks everything has hold in it.  Is there anything i can do to help him short of replacing his things, which is not going to happen?   It seems like  he already wants out of the property.  Do I break the lease if he does?

Any advise would be appreciated

Thanks

Atlanta, Marietta, Acworth, Woodstock,