Manor House Apartments, Bay Saint Louis, MS, 39520. Bedrooms: 1-3. Welcome to Manor House Apartments, Bay St. Louis and the magnificent Gulf Coast. Manor House Apartments is truly a beautiful antebellum home, once part of a large estate, nestled among majestic moss-draped oaks, and steeped in America's history. Newer buildings have been added to form the most charming community in the area. Manor House Apartments residents enjoy gracious Southern living at its finest!