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.

Anything much higher usually has a catch (block, collections, condition, etc.).Neighborhoods: Near Eastside, Martindale-Brightwood, Twin Aire can all work but are very block-by-block.

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

Quote from @Chris Watson: Well, I am not @Michael Baum and pale in comparison to his deals of the day, but this is one all RE owners can use12 Pack of MERV 8 Air Filters is $39.90 ($37.80 for military & veterans)  https://www.homedepot.com/p/HDX-12-in-x-12-in-x-1-in-Standar...Sizes available: 12x12, 12x20, 12x24, 14x14, 14x20, 14x24, 14x25, 16x20, 16x25, 20x20, & 20x25This is a year's supply. 

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.

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

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.

There is truly only 4 "lanes" in Real Estate Investing: - Deal Generators: this is your tried and true wholesalers, listing agents, those who specialize in finding a "deal" out of thin air. - Deal Builders: your flippers, value-add masters.

You can pull money out of a real estate portfolio tax free through refinancing  Stock Investing done right creates wealth out of thin air.