Laundry dispute

[Kari Piecuch]

My tenant says she's uncomfortable sharing laundry facilities.  

The unit above her had an old stackable,which I  removed. There is a utility shed with all four water heaters and a washer & dryer, which unit #1 has always used. Unit 3 will now use it as well (stackable was in the kitchen next to the fridge and looked better gone for showing purposes.) 

Any advice on how to deal with unit #1?