All units are 2x2 with a basement that can be utilized as an additional bedroom + a 1 car garage.

The first step, I would recommend, is looking for a local real estate group to attend to network and learn more about the industry and your local market (unless you are looking outside your market). 

Based on what I could see through the windows, there is some furniture in the house but I don't  think the utilities are turned on.

I have a buddy who has 3 subway shops those do well.. not sure what is worse dealing with minimum wage in in the food service industry or working with low end contractors pick your poison

You have to be committed to being better than everyone else in your industry every step of the way.

Larger Industrial property is a fairly hot area right now due to the e-commerce boom so you might find a bank that's interested. 

This means around the 1st of the year there is a temporary boom of unqualified renters entering the market and to make matters worse the temperature normally drops tremendously which increases the danger of frozen pipes or high utility bills (choose one or the other) insurance agents tend to frown upon vacancies... 

I was in real estate sales and Property Management for 16 years, but left the industry at the time of the real estate bubble to go back to college. 

It worked out great and he paid almost my whole mortgage then we split the utilities. 

Their portion of the rent is $115 a month as well as utilities.