How did you ensure occupancy rate was high enough to keep the investment profitable?

However if you are in a market that you believe will appreciate in the next few years a 1031 exchange will mean you miss out on the appreciation.Option 2: Do the cash out refi for 60% LTV to ensure you have a cash flowing property.

You used a private loan to ensure you didn’t lose a deal?

Ensure that vacancy is accurate for the area. 

More of the same is usually the key to incremental improvements (or "kaizen" if you follow Toyoda inspired management theory), synergies, efficiencies and eventually mastery.However one duplex does not make a strategy - I changed to SF after my first duplex almost 10 years ago after I realized I did not have the time to scale the more management intense 2 families.So I would ask the question, what are the 10 next properties you will acquire?

You lose control and efficiency when managing remotely. 

He or she has implemented systems and hired employees to efficiently manage the day to day demands of the business.

Look at things like window tinting to make it more energy efficient.

Is the Landlord responsible for ensuring they have a cold beverage in the evenings, as well?

Radiant heat is 30 percent more efficient, it also provides a more even, continuous level of warmth.