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

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

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.

Tenants in one of my units plan to move out on July 31, 2016. They called me in mid-June and told me there were going to move out, and I told them they needed to send me a written notice. Well, it's July 11, and still...

No oral contracts are allowed for sales of real estate.  

You cannot really modify a contract orally, but you agreed to a one time waiver.  

If you don't and the relationship goes sour, he can argue that he has an oral lease and you need to give him 60 days in most places to get him out....meanwhile he's trashing the place.  

As soon as they folks realize you are going to withhold some or all of their deposit, they are going to go nuts.  

So I got the numbers today—one week after oral bid.