I also let them know that they are disrupting our business and causing themselves to stand out as a bad customer/tenant.

My tenant has been there for approximately 2 months, and the upstairs tenants have been increasing disruptive and hostile to my tenant.

I know that might disrupt some things and I might have discussed these two options with the renter in the very beginning so they know there's some sort of expectation but this would likely be my plan of action.

My question is what do you think the best route would be to get rid of the disruptive tenants?  

Did the tenant display disruptive behavior?

We just never truly know what's actually unraveling under the surface that could disrupt this. 

OTOH, the bubble and all the disruption afterward makes it difficult to predict where we might end up.

There may be some things we have to renovate, but yes we could probably hold off on doing the carpet, flooring, kitchen work that would disrupt someone's living space.  

I hear renovations tend to disrupt the energy.

Goal: Easiest and quickest method to implement, without disruption to the flow of BP.