Two Amsterdam tenants had great success in reporting their landlord to the Huurcommissie rent tribunal for charging them exorbitant rent. The Huurcommissie ordered the landlord to lower the rent for a small, leaky, drafty room on Keizersgracht from 1,950 euros to temporarily 95 euros per month. The rent for another room in the same building was lowered from 1,200 euros to temporarily 93 euros.
Yeah my FIL, just recently sold a condo in FL. He’s had it since the 1980s and for the last 25 years it’s been rented by an elderly woman for basically the cost of condo fees, taxes and maintenance (though I think he lost money upgrading the sliding door after a hurricane). It was supposed to be where he retired to (15 years ago), but his wife had Alzheimer’s, so he ended up selling it when his tenant finally died, and sunk all the profit right back into his wife’s nursing home.