I found when I was living in student accom the best way to get the temp right in my room was to have both the space heater and air con running at the same time.
Found the best balance was to have air con on 16 degrees and radiant heater on 4/5 setting. I'd have these on all the time as it was the best feeling coming home to my room after a long day at uni to the just right temperature.
All while wearing an ice vest, wrapped in a doona?
pinkboy