Mountain Lake Apartments in Stone Mountain, Georgia offers easy access to international dining, shopping, museums, Stone Mountain Park, Patillo Soccer Park, and more. Conveniently located near MARTA Transportations, I-285 , I-20 and Stone Mountain Hwy, makes Mountain Lake just minutes from downtown Atlanta. The Dekalb County apartment rentals of Mountain Lake include total electric 1, 2 & 3 bedroom garden style homes and townhouses. These massive floor plans reach up to 1468 square feet. Call today!