Does providing complementally k-cups/teas, popcorn, spices, toiletry essentials (toothbrushes, floss, bath wash, shampoo, conditioner, soap, paper products, makeup remover, laundry detergent, firewood with firestarters for the fireplace and firepit constitute as substantial services?

Exterior maintenance such as pressure wash and gutter cleaning, these times we take care of them and usually at turnover.

@Justin,  No you don't need to provide notice however make sure to notify if you will be disturbing common areas, shutting off water to washing machines, having alot of workmen on site. 

Wash, rinse, repeat.

A few years from now when all the dumb money that doesn't know how to underwrite washes out that may not be true anymore. 

It might be a wash when you add up all those additional costs.

Quote from @Anthony Vasquez: Hi I have a owner of a coin laundry shop willing to negotiate seller financing but I’m new and have no idea what I’m doing would be open to a partnership if someone is willing to help me with the processIf this or any other deals available, where there’s a laundromat or car wash with seller Financing I’m very interested. 

They wash up nice, hang great on the beds and seem to last forever.

Your problem wasn't that they were unmarried, the problem was he had good credit and she didn't.

I watched my parents flip houses since I was little and have always been on job sites or made "pocket money" by doing chores like painting fences or washing kitchen cabinets, which I realize now my parents were putting us to work to build that sweat equity.