Small space laundry solutions

Hello all --- I have a historic property that has been divided into 4 1br/1ba units. I'm trying to find solutions to add laundry into each of the units, and while my contractor and I have discussed a few options, I thought it would be worthwhile to throw it out there to the BP community. We've taken measurements for stackable combo units and all-in-one units - have a few ideas, but nothing that has come to the fore just yet.

Have you added laundry into your remodels for smaller spaces, and if so, how? 

Thanks!