As I have a slipped disc and can't sit more than 15 minutes at a time, I keep my ironing board in the other room so I have to actually walk back and forth between the sewing machine and the ironing board. Gives me just a little bit of exercise too. My cutting table is between the two so it helps.
As to the heat, my sewing room is in the basement but I have a thermostat on every floor so I can set it to what I want where ever I'm at. Never heard of baseboard heating till I moved to Iowa. Baseboards have water running through them but its heated by gas. I guess that's similar to radiator heating from times past. But I love it as its not as drying as a regular gas furnace..................in my opinion.