New Apartment Heating

I been living at my new bay ridge apartment for 3 weeks now. Ive yet to turn on the heating. Its a 2 family, independent heating. Ive yet to kick on the thermostat. The apartment has been consistently 68-70. How is this possible? Its like 30 degrees outside, my heat is off but the apartment is 68 right now. Can I attribute this to good insulation? Thoughts welcomed!

By guikazoid |