Last week she recalled the February month rent saying that she didn't authorized the February rent..

I found out there is a current mortgage, talked with the company, but they won't give me any info because I'm not authorized. 

The answer varies greatly depending on the arrangement of your deal with the owner/landlord but in general you need renters insurance to cover your contents (since you are renter presumably) and then excess liability coverage for your short term rental activities.

It's all relatively available, readily available on the web. , so if you like digging down into that data, start with city data and census data and you'll get some good data, to evaluate those markets. , so what's what's the conclusion, , is there a best market to invest in?

The author (Bill Effros) of the 5 Day Sale method is probably the first, the others are modelled after his.

Even if they do, you have proof the house is yours and you are occupying it with keys to the door, so the police won't have the authority to evict you.

Does he have work authorization ?

It doesn't have to be 100% but even 20,30,50% can give you excess cash to continue investing. 

After determining and correcting the source of the excess moisture paint using a coat of Killz in that room as a primer. 

I have a clause that authorizes me to contact that person in case of "death, incapacitation, or incarceration" and work with that individual to coordinate removal of belongings, payment of rent, or even a refund of deposit.When someone dies alone, there is always a police investigation to ensure no foul play.