The radiators in Washington Plaza are not adjustable. I used to have to use my air conditioning in winter when I lived in the D building because it was so over-heated and there was nothing they could do about it. They can control the heat from the basement, but only to the building, not to individual apartments. Turning the valve does absolutely nothing. At least it doesn't in both of my apartments. The guy above me in the D-building swears he was able to completely turn his off when it got too hot, but he was never able to actually control the temperature - it was either off or on. I wasn't even able to do that.
My bedroom radiator hasn't been working at all the last few days - the other ones are fine but for some reason the one in the bedroom is ice cold. I wonder if the workmen had to turn part of the heat off and then forgot to turn it back on (that happens a lot at Washington Plaza - they sometimes forget to turn the hot water back on as well after work is done).
I would definitely mention it to the super. But this is a weird time of year when it can be too cold and we don't have enough heat because it's in the 50s outside. And there's a big difference depending on which building you are in. I am so happy not to be in my overheated old apartment anymore.