I’m just slapping my head about this... they should have just given the tenants radiator keys. It’s just a little piece of metal with a square key cylinder, they are all the same and probably cost a buck or two at the hardware store. You guys could have just bled them anytime they needed bleeding.
No kidding! It was a great mystery to me—why didn’t the repair guys add new knobs to all the radiators? My best guess is they wanted to keep getting called back to “fix” it and keep getting paid. It was terrible. And now I’m cold!