Another one in the 17C-19C club here. Can't really stand it C21+. Two of the girls in my office won't have any of it until the temp reads 24C O.o So here's the 2 girls on the other side of the office with one of those portable radiators turned on plus the wall radiators, then me and the other girl with our windows open. Such a waste of ££.
At night, I can only sleep soundly if the temp is 10C or below. If it's August, where temps are often 15C-20C at night, then it's insomnia.