Worked with same core 4, thus improving on our efficiencies.

Better management is a value add because you can achieve operational efficiencies through it. 

Another thing you might want to consider, if you are in a lower income area would be to increase the energy efficiency.

Right now my short-term goals include running this first STR efficiently and expanding my portfolio along with my knowledge.

I have a current list of homeowners with their phone numbers, and before I start contacting them, I want to know the most efficient and best way to see if any of these are on the do not call list.

Then her hours got cut at her workplace about 6 months ago. 

Hi there! I purchased my first home investment in South Florida. I currently live in the home while the back room (large Florida room with bathroom and back door entrance), is being rented out. The back room tenant do...

She claims that the temperature never goes over 65F and they are not efficient.

I prefer to work with a property management company where friendly and informative communication as well as efficient systems are respected upfront.  

I'm talking about substantial upgrades, for instance:  40 yr old radiators & old furnaces with window A/C units, compared to my new 90% efficiency furnace, new a/c compressor and all new ductwork.