"We stayed at Hotel Sonne for two nights with our two teens. We had booked a "family room" which ended up being two complete rooms at the end of the hall with a door that could close a create a small "hallway." This was so great! It gave us a ton of space, privacy and an extra bathroom for a reasonable price.
The rooms were just a tad smaller than an american sized hotel room. Our (parent's) room had a small couch behind the bed as well as small balcony. The beds were reasonably comfortable and the showers worked well. The hotel staff was incredibly nice, helpful and really wanted help us find whatever we needed.
Next to the restaurant there was a pool table and game area which was fun to relax in. The restaurant would bring food and beverages there if you asked too.
The hotel is a great location, right off the main pedestrian street and easy walking to shops, bakeries and dining. It was also a short walk to the fortress overlooking the town. We would absolutely stay here again when visiting Fussen."