It is unpopular, but necessary, but it was also temporary, just as war is, to provide that period of peace that will follow.

I tried to waive the late fees so we can solve everything in peace. 

I agree with @Ro Maga - 203k breathes a big fat hassle, inevitable delays (ask me about lead paint...), and red tape... but it's worth it. 

Stay out of it....Tell the other tenant that if there is a disturbance they are concerned with, then call the police and let you know the outcome.Unless this becomes a very regular issue...with multiple police calls..... where they are violating the lease in regard to infringing on the other tenants right to peace and quiet....I wouldn't even contact the fighting tenants.Do not become the outlet for a tenant to call you for every petty issue

Breathe deeply yes, that's it - 

In no particular order those might be: reputation, timeline for job and price.    2.If I were looking to buy a house, I would know at least three things, maybe more: location, school district, shopping nearby and budget for a mortgage.What I’m saying is the property owner/manager who knows at least three things, maybe more, is in a better position to get a proposal that meets their requirements, saves energy and time as well as providing peace of mind post decision making.Getting the “best deal” on a laundry contract requires the property owner/manager to submit a specific request with which both counter parties can work to negotiate the final product.

But a piece of tile in one house is not an issue as long as you don't sit there breathing it.

Relax and take a deep breath.

@Taylor Chiu I personally think you should take a breath and think it through. 

And also it would be a quiet peaceful place with no rowdiness.The problem as I see it is that the buying pool is limited, which would make it harder to sell.