I've stayed in various Berlin AirBnB in my visits to the city, and my experience staying at in the home of Tristan, Manuela, and Rudolf was by far my best!
I received a warm welcome upon arrival and their hospitality throughout my visit was unparalleled. The room at the top level of their home was quite comfortable, and everything was very clean. Manuela kindly offered me mineral water, coffee, and soup during my stay, and I was even able to borrow her bike for one day!
As a practicing designer and landscape historian, I also really enjoyed getting to live for a few days in one of the original single-family Siedlung units designed by the architect Bruno Taut in the years 1926-1932. The Siedlung is truly a work of art, filled with color and the sounds of birdsong; and Tristan and his family are great hosts. I highly recommend this AirBnB!
NB: if you end up staying here, stop by the nearby Milch & Honig Cafe - it's delicious!