Stayed at the Goebel's Schlosshotel for one night during a business trip to the area. The property itself - a old castle - is stunning, but the decoration has not been updated for a long time. However, the rooms are very clean.
The check-in staff was charming. However, the restaurant was disappointing and the service stiff. An order that was prepared wrong and send back, did still get charged on the total bill which doesn't speak for a 5 star property.
The wifi was very slow and there was limited mobile reception in the room. Overall I would not recommend the hotel for business travellers, but it might be a ok choice for a spa weekend or leisure trip.