Laundry Machine Rentals

I am looking for recommendations from small property owners (I have a 4-plex) on what to do about laundry washer/dryer. I am currently leasing from WASH Laundry and they collect for me and send a check. In general, I was content with them. However, we have had some break-ins/theft from the laundry room and getting WASH to help (upgrade machines to mobile app, etc.) is proving to be difficult (and their customer service for a small client like me is crappy)

So, 1) If you rent your machines - can you recommend the company? 2) If you own your own, what type? Do you maintain them or do you hire a service? (if so, which one and how much do they charge?) Do you do coins or a mobile app for payments (if app, which and how much do they take?) 

Any other tips or suggestions are welcome! 

Thank you in advance!