If in your state, its 10-20 years that's a long time endure the risk factor of bennies coming into the picture asking about grandpa's gold coins in the house (that never existed). 

Just tired of coins jamming and having to go collect them.

I could even turn the bottom floors into a coin-op 24/7 laundry facility for both tenants and the general public.

With me being a renter, I definitely see both sides of the coin in respect to whether or not to increase rents or keep them the same; especially if you are currently under market value.As a renter, if my rent increased every other year about $25 or so dollars, I'd be fine with it; however, if my rent increased every year arbitrarily because they "can," then I might be more apt to look for another apartment, even if the new apartment was a comparable price.

I would love to hear other sides of the coin. 

Sounds like you faired better than the donut shop on Steuben Street.http://www.wtae.com/news/car-crashes-into-better-maid-donut-co-in-elliott/32377260

In my duplexes I provide a coin op washer and free dryers. 

But if you created a separate coin-op laundry room that could work well.

Counter tops in the kitchen are typically laminate though we recently found a source for counter tops made of recycled glass and wood/paper which we are testing in a unit {with our student units we have begun incorporating more sustainable finish materials and have found it to be well received}.Finishes aside, all of our student properties come with complementary Internet (Fibre-Op) and non coin-op laundry.

And I believe that Jamil with KeyGlee, Pace, and Jerry have actually made their careers with wholesaling and flipping, but provide courses as a way to provide value (while making nice coin, lol) to some newbies that need to spend money to take something more seriously (like school, haha).