I sent an email to the administrator of our building about the heating problem. With the help of Renata, our flat owner, I now know what is happening.
It seems they have contracted with a larger heating company that is in major cities in Poland. They have a set policy to turn on the heat, partially, when it is cold for some consecutive. They won't turn it on in-full until it is 14 C. the reason of course, I believe, is to save money. The suggestion was to buy electric blankets. Of course, using electric blankets to stay warm during the day would raise the already too high cost for electricity.
So, for now, the above picture shows you how Joan is dealing, unhappily, with our new problem,