Wind, Flood, tornado, Hail, or third party damage or theft can still occur.

Expect wall/ceiling damage. 

Just factor in all the damages and court hassles into your price.

If the damage was done while they were there and you can back this up then they are equally responsible for the damage since they were on one lease.

You will start to see a more widespread array of carriers that come in competitive, but yeah the increase in hurricane damage is just not making these carriers profitable so expect a 15% increase in Florida at a minimum.

(I am not saying that its a proper maintenance)How is it possible that after two months of cleaning the drain and installing a new AC, the drain gets backed up again so bad that the leak from it damages tenant's belongings?

Anyone would notify their landlord of a typical water leak since nobody wants water damage but something like this isn’t really noticeable to the tenants or causing damage so they might not care.

My insurance is covering me, but they already said they will be going after the owner of the other house for recovery of damages.  

Send tenant a report with any damage they caused, none in this case.  

Situation is this: tenant informs me that the door to the walkout basement (currently unfinished/storage) is open, but that nothing seems to be missing/damaged.