If not, maybe consider adding a US citizen with good income/credit to the LLC as a member (make sure to update your articles of organization to be air-tight) and then they can sign the guarantee.

there seems to be some changes in the air.. with Realty share winding down..

I mainly did necessary repairs like foundations and air conditioners.

I am trying to find properties to Air BnB, but my strategy is dependent on finding a good management company.

I think it rally depends on your strategy, if you are after capital growth, cash-flow or Air B and B.

If you were to rewire the entire property, which is probably the best thing to do long term, would that allow you to upgrade the units to central air, mini-splits perhaps? 

Short of that: you can air pressure test the water system and bring a good sized generator to test electrical components.

They are 3 bedroom, 1 bath, central heat and air. 

(trashing the property, not changing air filters, overlooking repairs, unauthorized pets)6) What is your process for handling service requests?

Most of the time if you can prevent the cold air from getting to the pipes then they are less likely to freeze.