I lived there for 2 years while in the Air Force.  

The property is residential and improvements consist of adding new central air to both units.

If you are living there a long time, here are some common things people over look: 1. window/door package2. waterproofing details3. building materials4. air sealing/ indoor air quality, energy performance requirements5. sound reduction6. site challenges / site advantagesThe average person chooses more square feet, and more expensive finishes over performance and durability. 

Keith Sheldon with Precision Air and Hornbuckle Heating and Air Conditioning both do fantastic work.

Sometimes either the drain valve (on the side near the bottom) or the temperature/pressure relief valve (either on the top, or on the side near the top) starts leaking, and $20 at the hardware store solves that problem.If it doesn't leak, but doesn't get hot: if it's gas, and has a pilot light, sometimes the thermocouple burns out; this is a $20 part at the hardware store. 

I never put too much pressure on asking them for details.

Get the car wash with the wax, undercarriage treatment, 2nd rinse, and the air dryer if you want it clean.

I suspect though like air bnb local zoning will start to look at this.. 

I also own a condo that I use as a vacation rental on air BnB that I will be using a property management company to take care of when I move.

Purchase price: $100,000 Cash invested: $40,000 2-bed, 2-bath, 1,284 sq ft under air.