In my experience, opening any entity to hold a couple of rentals is often an unnecessary expense.

By no means am I saying you should take an unnecessary risk, but you have to take SOME risk.

That's still illegal under most state legalization laws, and it's still within the owner's rights to prevent.  

We have a contract with a pest control company that does quarterly preventative treatments on all of our properties at a severe discount- they guarantee their work and will do treat infestations at no additional costs. 

It varies state by state and this info is readily available on most legal related sites regarding foreclosure prevention.

If you have the right type of anonymity (it sounds like he's referencing a Series LLC w/an anonymous operating LLC) it is a huge lawsuit preventative, in that it requires time, money and effort on the part of someone wanting to sue. 

I would recommend multi family investments over condos mostly because condo HOAs can restrict or even prevent you from renting the space.

They gave them generic, one-paged leases they found online.While knowing how to vet tenants and having a solid lease can't guarantee a smooth ride, it goes a long way in preventing you from becoming that Uncle Who Lost Everything. 

Just gives myself unnecessary stress.

If your allergy causes your eyes to water and your entire contact with the unit is the 5 minute annual property check, it would be a reasonable accommodation to allow the animal.If your allergy causes your throat to close and stops your ability to breathe and your contact with the unit is picking up the rent in person every month, spending hours inside the unit doing all the maintenance, replacing the air filters every month, quarterly property checks, and the person takes their ESA dog in and out of the building using the only hallway and prevents you from entering other units, it may be reasonable to not allow the accommodation.