Different person, but my radiators can be controlled remotely, so I have a timer to turn up the bedroom radiator and fire up the boiler 10 minutes before getting up. The other areas in my house don't need to be heated, so they aren't.
The same for me. I've radiator valves that are scheduled (one time I'll add presence sensing to it as well).
Moreover I've "district heating" from the industry region at the Rotterdam harbor. So, I don't need to fire up a boiler. I have heat per radiator as soon as the valve opens.
