In terms of location, the proximity to a cemetery might deter some people, others might not mind it, especially if rental properties are in high demand.

Chihuahua’s are notorious for their issues with insurance (biting people).

It's amazing how often people miss this simple step.

What tools are people using to identify good markets?  

I listed it for $2,600 and had 20 people show up to the open house, got 3 qualified applicants and the unit was filled immediately.

People sign leases stating that they agree to no pet policies all the time, yet, they still bring them in.

House hacking is absolutely still a thing and many people have been successful with this strategy.

One thing I would investigate is the disclosures required about people dying on the property. 

Househacking is all about cutting down on your living expenses, and that means different things to different people.

If the new people want the unit prior to the end of the current tenant's lease, I would tell them they would have to pay the daily rent beginning the day they got the key and took possession.