Time off is clearly detrimental to my impulse to fix things. I don't even own this place!
But I pulled up a piece of broken floorboard yesterday. It's a sample to go to a vintage flooring place, so I can match the old floorboards in a few weak spots. I'm pretty sure it's heart pine anyway, like in all the old tenements. I suspect this pipe running along all the weak spots has something to do with the situation.
Yes, I've piled books on top of the hole so I don't forget it's there.
Good thing work starts again tomorrow. The only real damage of the holiday is an empty cavity where there was once a dangerous heater and a hole in the floor.
Most people just overeat for the holidays.