I have spent with my wife a night in this hotel this August and we were very satisfied. The location is excellent if you are planning to spend time in the castle and the surrounding museums or the lake, all of which are reachable on foot.
The room was small, but nicely decorated. Since we were spending only one night the size was not an issue but for more nights you should ask for a bigger room. The stuff was very friendly and serviced us whenever we required.
There was only one minor annoyance, the fridge was too noisy, but I am sure that the hotel will service this.