This waterfront, versatile two-story building offers a prime location on the St. Clair River in charming downtown Marine City. The main level features professional office space, ideal for a small business, medical practice, or service provider. With an efficient floor plan and flexible layout, it can be adapted to a variety of uses. The upper level is a private 1-bedroom, 1-bath apartment, perfect for an owner-occupant or as an additional rental income opportunity. The apartment includes a comfortable living area, full kitchen, and convenient access from a separate entrance. Situated in a walkable area near shops, dining, and waterfront amenities, this property combines business potential with residential comfort in one building. Main level consists of 1,958 sf more or less - current configuration a professional office / medical. Upper level consists of 1,150 sf more or less - current configuration a 1 bedroom / 1 bath apartment.