Where can I find washer and dryer machines with digital or card payment options suitable for a four-unit property in  Dayton Ohio?

(owe $15,000) very low interestLive at parents rent free- $0 monthfurniture credit card- $2400/$6000 $150 a month. (0% interest)Discover card - $3369/$4000 $150 month ( 0% interest) Navy fed card- $2,700/$11,000 Navy fed card - $13,000/$16,000Around 5 other credit cards which have no balance on them.Assets:I own a 2014 BMW 550i which is worth around $15,000. 

I'm handing out my business card to customers while I'm driving them around, but so far, I haven't received any leads from that.

Also you need to figure out how you intend to cover inevitable property damage done by guests but there are plenty of solutions for that in the marketplace where guests pay a flat fee per reservation in lieu of a deposit and you get covered for an assortment of potential issues (bad checks, credit card chargebacks, fraud, personal property damage, etc.)  

I've done it with credit card payments on vacation rentals, won every time, and the money was returned to me.I will bet this is a tenant with a lower credit score.

Agreed with @Gregory Schwartz, the gifts with a personal touch are the most memorable.Gifts related to their hobbies/interests are the best.I typically land at $50-200.I work with a lot of clients who buy properties that need work, so I usually throw in a Home Depot gift card with a handwritten note.All the best!

I would like to convert them to card machines.

I also get cards and letters every few days wanting to buy my notes and properties that I own.

The tenants downstairs from them dont raise a stink as the boyfriend doesnt have his green card so they're not going to anything to rock the boat. 

In order to make it worth her while you will have to answer both questions to her satisfaction.To answer the first issue of not being real to her, I use a tool I call flash cash.I will bring 1-5k with me in $100 bills and when overcoming her first objection, “I don’t want anything to do with it,” I will fan out the cash like a deck of cards and say, “I know this doesn’t feel real to you, but I am actually here to give this to you.”