I'm officially a Landlord again. In the past I've managed and owned a few properties.
Currently I do not have the time to managed them in person and pay a third party to do so.
For now it works out okay and isn't that costly of an arrangement.

Appliances simple, easily replaceable and maintainable in your area. Find a model # that is commonly available. If you have multiple units buy an extra one or two ( if you have 2-8 rental properties its nice to have a spare ) especially if its an easily swappable appliance. You can repair it later. Often you can get some volume discounts.

With the current Supply chain issue I think having a spare unit is a good practice. It's easier to go out yourself or your maintenance guy and swap out a troublesome appliance ( in some cases ) and wait on part. Even keep a couple of those commonly replaced parts in stock. I can tell you nothing sucks more than calling a service having them go out there. Only to tell you its a part. ( now your out the $ from the call ) , customer is a bit frustrated, and now you got rinse and repeat. Not fun.

That was the first thing we did when renting out our old house was pull out the high end appliances and put in the simple stuff. The split level same deal. If you end up flipping it though often those "rental" appliances don't cut it.

The other thing we found do NOT skimp on toilets. An extra hundo on a quality toilet will keep you from getting calls 24/7.
Plumbing and Electrical have always been the biggest PITA headaches for me.