I'm not sure I would pay to do this in a house, but there is no visual difference and it's tough as nails.  

Use of LVP flooringUse LED lighting without bulbsUse satin or semi gloss paint for easier cleaning of wallsBlack appliances instead of stainless show less scratching over time & still look updatedLine kitchen cabinets and drawers with vinyl sheet for protectionPut bath fan on same switch as light in bathroom to ensure air circulationRemove garbage disposal if not newer due to continuous maintenance Remove exterior door knobs that have locks to avoid tenant lock outs, use deadbolt insteadRemove closet doors if they become an issue especially large bifold ones, install a curtain rod or leave exposedRe caulk areas as needed during turnoverInstall door stoppersUse curtain rods on larger windows, let tenants get drapesThermostats that cannot be reduced or increased above certain thresholdsSchedule HVAC maintenance twice a yearSchedule gutter cleaning once a yearPhysically mailing 2 tenant tip letters a year with reminders incorporating visual images  Interested in hearing more suggestions from others!

I’m a very visual learner.

For a visual of this, google "soundproof ceiling detail" and look at the pictures.

Don't worry about "tenant insistence" as you have visual and written proof to the contrary. 

If the EMF level is extremely high, it can actually make people have visual  and  auditory hallucinations.

It should give you a good visual comparison.

Some people just cannot visualize or grasp the numbers and need to have it all laid out in front of them.As @Jerry W. mentions - fear is very powerful until you are able to move past it and realize there was nothing to fear afterall, assuming you’ve done your homework and you have a team of professionals to help you.  

Prior to the walk-through, be sure to set expectations for you having the visual access you need. 

How to Create Wealth Investing in real estate: Grant Cardone (Great to get started, and visualize your journey forward), and Lifestyle Investor:Justin Donald (great for mobile home parks and general investment thinking), Am I Being too Subtle: Sam Zell ( Not specific to multifamily, but really good to understand Sam Zells journey spanning a few decades and financial forces which contributed to his great fortune).