I had a lovely time at Katharina and Kai's apartment. Their place is comfortable and quiet, and there's everything one needs: a fully equipped kitchen, dishwasher, washing machine, fast internet connection.. The room is exactly as you see it in the pictures: spacious and bright; and the sleeping area is extremely cozy!
Katharina and Kai are amazing hosts: they are kind and generous, they like to chat but at the same time they allow you all the privacy you may need.
I would definitely recommend this apartment!