Medical marijuana, recreational marijuana and street marijuana all leave behind a nasty odor when burned that gets into carpets and drapes and smoking can leave a film behind on walls and other hard surfaces.it doesn't matter what the source is.  

The house has a lot of character and I even leased it to a movie company for 2 months for them to film in!

You can get a film for the window that would reduce the noise a bit.  

Have any of you come across a black film accumulating inside an apartment home?

And you’ll never get anything back for something that can’t be captured on film like a horrible smell.So add those replacement fees onto the maintenance fees that you’ll incur.

I plan on bringing a go-pro and filming it all as I change the locks front and back and make sure nothing is awry.

https://en.wikipedia.org/wiki/Pacific_Heights_(film)https://www.allpropertymanagement.com/resources/property-management-laws/virginia/I'm not sure you have what it takes to be a property manager, if you can't even manage the owner.

You can also use this process on end panels that aren’t wood but the film of a finish panel.

If it's just a laminate film applied to your existing windows, it will degrade in sunlight over time. 

I learned about easements and how to read title reports as part of my education.My husband and I looked at a property in Roslyn, WA - the town where Northern Exposure was later filmed, if anyone remembers that old TV show.