As a safety measure before you can move those machines out of the unit (likely after your tenants leave) would be for an auto shut off valve - some of them are digital and will do it when they sense any sort of leaks. 

The loan I took was fixed for 10 years at 5.35% with an ARM after 10 years at 75% LTV.After 7-8 months of property values increasing and more comparables to support my $120k value I decided to refinance again to get into a fixed 30 yr with a 4.8% interest rate and to pull some equity out of the property.  

not a bad safety buffer as well  

Hopefully it was one of those campaign things he had to say to satisfy he progressive arm of his party.

This is why ARMs exist.

Some cities/insurers will have requirements like adding a safety gate around the pool.

Armed with those two items you should be able to determine what parts of the building you have to insure. 

This is critical for safety.

Any safety escalations concerning pets roaming in front and backyard of a shared building, impacting the neighbors' quiet enjoyment of their side of the property?

Should I just stick with the safety of the large lender?