Much to like about this hotel, but let down by a couple of things. We had a beautiful room overlooking Mainz and a great evening sitting on our balcony.
Less good is the hotel entrance and parking. It is way too narrow and gets blocked easily - we could not leave for half an hour because a delivery lorry blocked the entrance.
The restaurant was small for such a large hotel, though there are outside terraces for summer. We found it loud (coach party was in for dinner). Being away from the town, food is important. It was reasonable value, but as we found in much of Germany it was overlooked and chewy. Breakfast was ininspiring. Staff were friendly and reasonably helpful