My Dd's room is that temp right now but we have the vaporiser on which I think makes the thermometer a bit hotter. She's wearing a singlet and a wondersuit as well and has 1 blanket on. My DD prefers to be a bit warmer, I was pretty hesitant because I read that the recommended room temp is 18 degrees!! We generally keep it around 22 - 23 with the same clothes on and a couple of light blankets and she sleeps perfectly and doesn't stir all night.