We stayed at Jonas' house with a party of 6 work colleagues and had a great time! The house is very big and equipped with everything you need. We made use of the sleeping arrangements on the first floor, two bedrooms, the office couch, and a bed in the hallway. This wasn't a problem for us as we were quite easy-going. The location of the house was also very convenient, as we travelled by public transport and the nearest stop was never more than a 5-min walk away. The only thing I'd keep in mind is that this is also the house the family lives in (when there are no guests) I presume, so I'd be mindful of their personal belongings. Communication with Jonas left nothing to be desired, he answered in a helpful and prompt manner.