We used leverage (20% to 25% down) to scale with sufficient reserves.The past two years have been hard on us personally due to myriad of reasons 1) higher turnover costs in our area possibly related to COVID and local market dynamics 2) bad section 8 tenant (not allowing anymore for our homes) --> eviction and costly repair  3) unexpected high cost repairs on few properties  - water intrusion needing french drain, plugged old sewer line needing new sewer line,  fallen tree that pulled electrical cable that pulled out the wall electrical panel.   

They rinse cement into your drains.

I have a 5% rate with my parents on two loans, but it does come with strings attached like replacing the kitchen facet, sink drains, and a ceiling fan in one of their rentals yesterday. 

I have done extensive research over the past several months in regards to housing components (sewer systems, plumbing, siding, HVAC, electrical, roofing... what is necessary and what isn't, at what year does it need replacing, hardwood vs. engineered wood flooring, circuitry, drain lines etc. etc.), how to property analyze a market within your farm area, what to look at when running comps, how to properly schedule a SOW so it stays on track (or as "on track" as reality will allow!

If freezing is a concern, I would winterize the washer because all the water might not want to drain out.

Do an inspection of the property once a month to make sure it is working (in case they break it and don't report it).Other option is to remove it, but chances are they'd block the drain which again would be repaired at their expense.

The clogged sink drain and probably AC is on them. 

I have a lot of friends who have been hit hard by 50% rent increases and it breaks my heart to see the creative drain of folks moving away who can't afford to live in the city anymore.

The only rental claim I had a tenant submit for renters insurance was denied (condo flooded due to an exterior patio drain backing up) and they felt that damaged was not their liability. 

First, I think it's strange that a landlord would be Facebook friends with an ex-tenants mom ;)Also, re: the OP - the next bandit sign he handwrites for the front yard is going to read " _____  PUTS CONCRETE IN DRAINS" ... and _______ won't care a single bit.