It doesn't sound like a showstopper to me.Did you ask the plumber if there is anything people can flush that will help keep the lines clear?

Anything with a class 5 rating flush would be fine.

They were getting it flushed several times a year!

We buy the cabinet hardware in bulk on Amazon and do flush mount hinges, new handles and knobs.

This is the simplest method, but it also means your tenants are more likely to abuse the utilities by leaving windows open with the heat or A/C running, leaving lights on, ignoring the toilet that constantly flushes on its own, etc.3.

Such as unplugging smoke detectors, flushing things down toilet not meant for the toilet, etc...

. #1 is probably flushing "flushabe wipes" and female products. 

This is the simplest method, but it also means your tenants are more likely to abuse the utilities by leaving windows open with the heat or A/C running, leaving lights on, ignoring the toilet that constantly flushes on its own, etc.3.

I had tenants that stopped paying rent for 2 years in NY during the pandemic and we couldn't kick them out, i've had tenants move out and leave someone squatting and NY made it impossible to evict them so I had to pay them off, i've had tenants destroy their apartments before they moved out (maggots in the fridge, flushing their kids toys down the toilet etc) so i've dealt with real difficulty.

Is it better to flush, or place in a basket next to the toilet?