Keep in mind the subs will want to time slot the work.

Buy a neutralizer, spread it around heavy, poly film it, come back in 24 hours, ozonate if there is still smell (likely for a couple days or more depending on smell and ozone capacity of machine), then you’re probably sanding and throwing down whatever stain /polyurethane you desire.

(If the image doesn't display well, you can also find the chart here)I also made note of various helpful reviews (many from BP):LifeProof +s: "best overall," "easy to install, great value," LifeProof -s: "tabs break during install"TM Allure Ultra +s: "held up great"TM Allure Ultra -s: negative reviews on houzz, subfloor unevenness issuesSmartcore Ultra -s: negative reviews on houzzNuCore +s: "great over imperfect subfloor"NuCore -s: "shouldn't be used in wet rooms"DuraLax -s: weight limit and issues with area rugsMohawk SolidTech -s: lots of bad reviews on floorcriticsCoreTec +s: great product at great priceI ended up going with CoreTec ProPlus since I found it on sale for $2.50, and I'm actually not very happy with it! 

Turned it into a lean machine mate.

Should I ban them from using the machines?

Once he did mention that the central heat gas line needed to be hard plumbed through the furnace housing, and the washing machine drain needed a p trap. 

And when you ask any of the many, many people who bought into STRs being a cash printing machine for anyone involved, it is a bust.  

Ear plugs, noise blocking machines, noise cancelling curtains could be purchased by the tenant.Rugs will help.  

I have a client with an STR in the mountains outside Denver who has a hot tub, a sauna, hanging lounge chairs on the deck, a pinball machine and arcade games.

Deal Machine just recently started offering free skip tracing to their Pro subscribers (150/mo).