Biggest mistake I've made as a landlord.

I accepted a tenant who had the FHEPS voucher. It seemed legit because I got the first 3 months rent up front and a bonus check. Thought FHEPS would be paying the rent for the tenant for the remainder of the lease. Totally stop receiving the rent after 9 months, and never got the rent in full on the 1st of the month. I lucked out because the tenant voluntarily left so I didn’t have to deal with the gruesome NYC eviction process. Stick the basics as a landlord. Get a tenant with good credit, and good employment.