First of all, I assure you a landlord conglomerate paid for this to rank.

https://www.propublica.org/article/realpage-accused-of-collusion-in-new-lawsuit

But second of all, as a landlord who rents out an apartment myself, let me abundantly clear to everyone:

DO NOT TIP YOUR LANDLORD.

Trust me, it's already been priced into the fucking bill.