We had a great stay at Karl's place. He was very helpful ahead of our stay and replied immediately when we had questions. The house was clean and the location is great to reach the most important parts of the city. Self-check-in and check-out worked out nicely. We have been 8 people staying for three days. There are three bedrooms with beds fitting two people, respectively. For the 7th and 8th person we could use foldable beds which are not really comfortable. It worked out for three days but we would not recommend to stay longer than that with more than 6 people.