Its better to do the leg work and come up with your own criteria based on your knowledge, skills, and abilities.

Since we already own a lot of properties, we work to partner with cheap and skilled tradespeople saving maintenance costs.We are proactive in our maintenance so our tenants are happier and they stay on average longer than most tenant occupancy periods (which saves the owner on future leasing).We set up leases to end during summer months where we have the most tenants looking for new houses to rent so we can maximize rental rates.Even though we rent fast, we prioritize make ready repairs so that we can continually keep the property up to maximize rental potential and identify and get great tenants.We are proactive in our collection of rent so we evict faster than self managing investors.We perform inspections to identify how tenants are keeping the property to not renew leases to hoarders and people who break lease terms.We perform move in and move out inspections by video to document condition to charge back tenants on security deposits.For some investors, they are not as on top of all aspects of property management and they should get help (to improve ROI). 

Mix in medical conditions that require medicines like blood thinners (My grandfather had the heat set to 80 when he was on them) and your even more screwed I think.I know on my Nest T-Stats at home, I can set a schedule based on the hour.

This assumes you don’t have any medical expenses coming up soon and already have a healthy cash reserve.

She has a slue of medical conditions(which i strongly suspect are just hypochondria) and 2 teenage children.

I've also gained invaluable experience in DIY repair and improvement regarding everything from basic cosmetics like painting and changing light fixtures to completely redoing the old caste-iron plumbing on the property.Despite the increased cashflow, my family has had some unexpected medical costs that set back my savings goals for the next investment.

If that's not an option, and you have a W2, I always tell people that one of the most valuable skills I learned was how to save $25K.

I have $50k in the bank after selling my first renovation/flip (took 30 months to sell, but made some good rent in the mean time).Property 1 is class D with 16 units (all efficiencies) located in old downtown, near the hospital and in the medical center of the town.

It seems your non-PM friend is probably not very skilled at these aspects.Every time you have a vacancy due to poor tenant screening and placement, it costs you a lot of money, in lost rents, make ready, marketing, etc.

My wife and I got one on our little Investment Condo in SoCal, and I liked it so much that I left my job in medical sales to join the company.