Micky,

Forgive me but you don't sound as if you are ready for this project. Has
the moisture problem been resolved? Who needs to fix that, the building or
your friend? Have you looked at the apartment? What needs to be done? Do you
have the knowledge, experience and tools for this?
Florida has many water damage remediation companies. Pros who are bonded.
Don't know why your friends can't find one.

Dave M.