Plan an unforgettable stay for a group of up to 8—and a dog or 2—at Harbor House. This spacious waterfront home with a hot tub and private dock where the Rock River emerges from 10,000+ acre, full-recreation Lake Koshkonong, provides a world of water sports—boating, kayaking, paddleboarding & more. Guests of all ages will love playing the 3 classic arcade games & ping pong, gathering around the firepit 12 steps from the water, and grilling & dining on the 2nd-floor deck overlooking the water. Close to Madison & Janesville.