We only stayed in Red Kurka for two nights but both were very enjoyable. There was much more space than in a hotel room with the bonus of a kitchen and dinette. The kitchen included a washing machine which is a real bonus when you don't have much time in a city. (I recall wasting nearly a whole day in Berlin looking for a laundromat).It was very warm and cosy during the cold November nights and extremely quiet. Karl couldn't have been more helpful and is extremely prompt with replies to emails.