Definitely get that snake some heat! I'd say yes, get it set up near the fire place. Also, if you want to provide additional heat (to give a heat gradient) you can try to find some of those hand warmers that they sell for skiing and stuff, stick that under the enclosure. They get pretty warm and they last for about 24 hours. Also make sure your parents aren't burning pine or cedar or any other wood that could be harmful when your snake is set up near the fireplace.