Höhengasthaus Haldenhof

Perhaps the most beautiful restaurant above Lake Constance. The view from it's beergarden is absolutely amazing.
The place towers on top of a cliff overlooking the entire Obersee and with the right weather you will get views to Bregenz and the Alps.
The area itself is very beautiful aswell and it makes for good small hikes from the lake up the mountain to the restaurant.
If the weather is right and you are in the area do not miss this.
It serves a variety of german dishes and down to earth meals.