Rent control laws are market specific.

Where specifically in Indiana has anything been built?

Call the zoning department again, and this time ask specific questions: Is a variance required, or can you proceed as-is?

I think it's going to be location specific for sure; where I am very few people hang out in the house all day long as they are usually busy hitting the parks and attractions. 

Home warranties can sometimes cover rental properties, but it really depends on the specific terms of the warranty and the provider.

If, however, you are not specifically looking for me to be nice and would like me to be honest instead, I'll say that using tools like your app completely misses the point and should be avoided, outside of as a teaching tool.

USPS specifically forbade from doing anything like this years ago.

Eager to hear if anyone has any more up to date information about Costa Rican REI in general and/or VRBO specifically

Cleveland, Ohio is a great market to focus on for cash flow and specific pockets have gone up 2x and upwards of 4x in the last 5-10 years even!

Deals are location and market specific.2.