boston, third-floor walkup. heat broke april 4. been texting maintenance for 3 weeks. boiler issue. days have been getting warmer but nights are still 38-42°F. landlord keeps saying "the parts are on order, just deal with it for a few more days." we're using space heaters. electric bill jumped $180.
am i within my rights to withhold rent until heat is fixed? the lease says i can't but i thought habitability obligations override that?