Having stayed in many German hotels. my wife and I thought the Kronenburg came high on the list. The stylish breakfast was perfect in terms of choice, range and freshness; the general maintenance was of high quality, and while the room we had was 'quirky' in some aspect of style, it was spacious and immaculately clean. Above all, the hotel was distinguished by its caring, friendly and helpful staff who generally took note of all comings and goings.
Minor recommendation? A kettle/coffee maker in the room would have been ideal.