Pretty place at Bodensee (Lake Constance). We visited it on a day trip from Munich in 2020. It’s not that far, about 2 hours away. The marina is quite pretty though not much space to walk around and a bit too crowded for my taste, especially during the covid times. We ended up going to Bregenz, in Austria, at the bottom of Bodensee. Bregenz has a lovely promenade at the lake, much nicer for walks 🙂