Hosting wanted: Petra travelling with Anton to Freiburg for treatment

My father Anton has been accepted for treatment at the Freiburg Cancer Centre in Freiburg, starting on Thursday in January. We live 579 km away in a town in the north, and hotel costs would use up what we have set aside for the treatment itself. We're looking for a room, granny flat or short-term rental within about 30 minutes of the hospital, for 3 weeks. Two of us would stay: Anton and me. We can contribute $130 a week and cook for the household if you'd like. Anton will have some immune precautions, so a clean, smoke-free place would be ideal. A kitchen is a bonus. Thank you. Whatever you can give, even just sharing this page, means a lot.