Personally, I like the all-in-one units but they are expensive and poorly suited for larger units where it will take forever to get a load of laundry done (since you can't move the clothes from the washer to the dryer).

This laundromat’s washing machines cost more than I thought, but the time of washing the clothes was fast: 22-27 minutes.  

I was even tempted to use clothing as my marketing strategy to attract motivated sellers if that would work. 

You can make minor adjustments based on the type of appliances (dishwasher, clothes washer and dryer, air conditioning, etc.) and the size of the rental.

She treats the property horribly (I am constantly cleaning up her mess outside (dirty diapers, clothing etc.) her place every time I go to cut the lawn) and I have no option besides getting her out of the property (I have been way too lenient with her).I am looking to serve her a 30 day notice to terminate month to month tenancy but she still has not paid this months rent.

@Jay Hinrichs , @Brian KloftThe guys that like cash/respect leverage, know that life does not exist on a spreadsheet, and that pay off properties are hiding in plain sight...just like real life where the unassuming rich folks drive old cars and buy clothes at Costco.

You figure out what it TAKES to become succesful and then use what you have to get what it takes, to become succesful.If it requires 40 hours a day, $3000/week on marketing, decent clothing, proper english, a decent car and knowledge about the niche... well figure out a way to slow down time to fit 40 hours in a day because that is what it takes!

In my experience 10% of residents will know how to change a furnace filter and actually use them.For example, at our property about 1/3 of all maintenance calls are for clothes dryers. 

For cloths, they need to be cloths that you cant wear outside of work.

Open a clothes shop, open a coffee shop, make money on ebay, become a used car salesperson- there are many things that allow you to make money besides this.