Turn on the internet, the temperature in the bedroom should be 18 degrees. In theory. In practice, everyone has a different comfort temperature. For me, 20 degrees in the bedroom is enough. The kids don’t complain either. Yes, the basement is at 18.9 degrees, it is fully insulated and the basement floor feels (strangely) pleasant even when the heating is off. It doesn’t get colder there. Last winter, with 0 degrees outside, it was still 18 degrees there. On the ground floor (which is an open 55 sqm living, kitchen, dining area) it is currently 22.5 degrees.