Thankfully5-day notice to vacate to tenant at willThis notice can be used only if there is no rental agreement, oral or written.

Get him to state he has an oral lease in writing (letter, email or text) with dead husband, then evict him (oral leases are legal in Florida) plain and simple.  

When tenants move out I lightly sand and re-coat, either in spots or all over depending on the condition that they've been left in.I've had one set of tenants in there for 2 years after the initial refinishing and they kept them in great condition.

Would they contact me to refund any or all portions of that?

You can just say, and Jane and John Does 1 - 10, or all occupants, etc.

That would be a simple clause in the lease agreement he signed that stated he would forfeit some or all of his security deposit if the unit was not left in a cerntain condition.    

oral?)

[a] For example, where the parties to a contract make an oral agreement that, when reduced to a writing, is mis-transcribed, the aggrieved party is entitled to reformation so that the writing corresponds to the oral agreement.[1]

Gives you income and expense report by individual property or all properties.

I don't care what country you're in that means that they know what he's up to/located be it dead or alive(and up to no good).