Apart from LeConte Lodge, there are no motels or rental cabins located within the National Park.
LeConte lodge is situated on the top of Mt. LeConte, and is only accessibly by hiking at least 5 miles one way. No electricity is provided, though there are flush toilets. $110/person, $600/8-person. The phone number for LeConte Lodge is 866-439-7375.
The nearest cities with plentiful accommodation and supplies are Cherokee, North Carolina and Gatlinburg Tennessee.