I don't think I am BU. I know it's her house etc and she can have the temperature at whatever she wishes but....
We went to vist my mum for the day who I only see every 6 weeks or so - 2 1/2 hr drive each way. Me, Sis, DH and DD (6mo).
I know she likes it warm but in the full sun in the afternoon the temp peaked at 29.1 deg in the living room and DD was down to her nappy.
Mother refused to open the windows - she wanted to keep the heat in so it was warm later.
AIBU to think that for the comfort of her guests who she rarely sees she could have opended a window? Because to be honest I don't want to go back if I have to endure that again. She seemed to think it was funny.