My first top and bottom multi-unit.

[Barrett Johnson]

I have acquired my first top/bottom multi-unit. Two units, first floor two bedroom with large floor plan. Second floor three bedroom. Both have washer and dryer hookups and one bathroom. 

I am wondering if anybody has any recommendations on how to eliminate friction between tenants in this set up. For example, I am considering removing all ceiling drywall and installing rockwool for both sound reduction and Fire retardant. Is there anything else that one should consider? 

FYI- Access to second floor is outside steps only. Not sure if this relevant.