Personally, I'd be airing on the side of caution on this one if this were my client given the different uses (LTRs and STRs.

I recently retired from the Air Force and have five properties.

You could also add an ERV (but that gets pricey) to bring in outside air to that unit as well.

So we custom built a solution within air table to help us with this as we have an internal project manager on our team. 

I had a similar experience recently and rather than renting an ozone machine I purchased an air purifier to run in the effected areas and Airbnb reimbursed me for this expense.

Quote from @Jason Moore: Active duty Air Force member transitioning to a new life after 23 years of service.

But now since the sale of one of my investments (owned free and clear) in Port St Lucie, Florida selling for $450k fell through at the last minute since buyer didn’t get loan approved, now I have to sit and wait until it does sell to get repair work started.

As an Air Force veteran, I received my start in real estate investing using VA loans.I wish you all the best in your journey.

I'm just writing on a napkin.Or do Conexes or Cargo Containers 8x20; since your near ports should be relatively cheaper. 

I started with turnkey to get into REI, but now with a little more experience under my belt, I'm considering selling my turnkeys at a loss and moving on to something with more meat on the bones.Exterior - $225- pressure wash- remove damaged/torn window screens- remove all stickers from all windows- repair hole in soffit to the right of chimneyMain Interior - $825- repair/replace damaged sheetrock- wipe down and clean all walls throughout house- wipe down and clean all doors, trim and baseboards and throughout house- touch up paint on walls- touch up paint on trim and doors- replace missing/broken blinds- replace missing/broken doorknobs- replace missing/broken light switch and outlet covers- replace missing/broken light bulbs- make sure all doors open/shut properly- make sure all windows open/close properly- replace air filter- replace batteries in the smoke detectors- remove all trash from attic- clean and paint all bars and shelves in closets- clean all AC vents and return vents- make sure all drawers and cabinets open and close properly- make sure to clean out all drawers and cabinetsLiving Room - $10- clean and paint fireplace with black high heat paintKitchen - $55- wipe down and clean all cabinets, inside and out- touch up paint on cabinets- paint under sink- tighten loose cabinet hardware- caulk sink, floor, counter- replace broken trim on ends of countertopsLaundry Room - $10- clean and paint inside washer box- clean out dryer ventHalf Bathroom - $25- wipe down and clean all cabinets, inside and out- touch up paint on cabinets- paint under sink- tighten loose cabinet hardware- caulk toilet, sink, tub, floor- tighten door handleMaster Bathroom - $75- paint cabinets inside and out- tighten loose cabinet hardware- caulk toilet, sink, tub, floor- fill in missing grout in showerHall Bathroom - $35- wipe down and clean all cabinets, inside and out- touch up paint on cabinets- paint under sink- tighten loose cabinet hardware- caulk toilet, sink, tub, floorStairs - $20- paint handrail- paint banasterGarage - $25- pressure wash garage floorLocks - $300Yard - $175- cut, edge, weedeat- trim bushes- trim up trees- clean up fencelines- haul off all trash- Remove grass from cracks in concrete- remove all loose limbs and debris- clean out flower bedsFlooring - $275- clean all carpetsCarpet Cleaning Estimate: $275Garage - $100Program two new garage door remotesPest Control - $85- pest control needed: General pest sprayTrash - $350- remove trash at the curbCleaning - $120