The tenants have their own W/D so I can’t make money off that.

It's just old mom and pop owners, many do not even list the rentals online. 

If they don't NEED the money for a down payment elsewhere, the income could certainly fund their payment at a new home, rental or retirement home. 

I'd recommend listening to this episode of BiggerPockets Money and then using the linked spreadsheet to help you decide https://www.biggerpockets.com/blog/money-572

Like all businesses, laundromats have problems and require time, effort, and money.

Will they finance 100% of the purchase and renovation or will they want skin in the game (you putting money in).Most do not do 100% funding so beore going down more rabbit holes, make sure you have the $ aspect situated first.

You can also check their reviews online at Google, Facebook, or Yelp.

If you ever have any questions regarding this or in general feel free to reach out I enjoy helping and ensuring other BP members avoid lost time and money. 

I'd rather have a property remain vacant to I can spend time cleaning up and getting it ready and back-online so it could be available for someone else to rent.

I will not have a full time job until this comes, so I wont be able to show much income other than part time money flowing in, until I start this position.