The Osthoff Resort & Spa | 1,394 followers on LinkedIn. Your Place on the Lake® is a AAA Four-Diamond resort set on 500 ft. of pristine shoreline on Elkhart Lake, Wisconsin. | The Osthoff Resort, in Elkhart Lake, Wisconsin, is a premier AAA Four Diamond resort located on 500 ft of recreational lakefront. Offering a casual atmosphere within its'​ elegant surroundings, The Osthoff Resort provides a romantic getaway for couples, while year-round indoor and outdoor activities, provide a family with many opportunities to enjoy spending time together. Our conference center offers spacious and well-appointed ballrooms and meeting rooms to assist in the productivity of retreats and conferences for our group guests.