In Winter make sure to turn on the heating quickly, so the bathrooms can heat up before you need them. First, turn on the thermostat in the bathroom in the ground floor. It activates the heaters in all bathrooms.
After that, open the valves on the heaters in each bathroom.
The rooms are heated using air conditioners. Each room has a remote control. Make sure the mode is on heating (or auto), then select the temperature and turn it on. It can take up to 15 minutes for warm air to come out.
The kitchen has a wall-mounted thermostat to control the air conditioner. Set the temperature on then wheel, then move the lower switch to the left and press the button next to it once.