Spacious Accommodations Martha Lake Retreat in Mercer offers a spacious holiday home with four bedrooms and three bathrooms. Guests enjoy sea and lake views, air-conditioning, and a fully equipped kitchen. Modern Amenities The property features free WiFi in public areas, a games room, and a tour desk. Free on-site private parking is available, along with a washing machine, dishwasher, and microwave. Local Attractions Nearby attractions include Moondeer & Friends Gallery (24 mi), Ironwood Carnegie Library (26 mi), and Wilder Fine Arts (27 mi). Gogebic-Iron County Airport is 33 mi away.