If left up to my own devices I will have it at 80F in the winter and 75-78 in the summer. My SO likes it cold so we usually settly on 75 all year long. 72 is freezing for me. I have lots of blankets though so I am always under one. Our thermostat is broken right now so sometimes it is boiling lava hot inside and sometimes it is super cold... I think I have found a somewhat happy medium but I don't know what temperature that is really... the temperatures I am giving are from before the thermostat broke.