A room near Paris University Hospital for a family from a rural district

My daughter Justine has been accepted for treatment at Paris University Hospital in Paris, starting on Tuesday in September. We live 229 km away in a rural district, 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 4 weeks. Two of us would stay: Justine and me. We can contribute $50 a week and cook for the household if you'd like. Justine will have some immune precautions, so a clean, smoke-free place would be ideal. A kitchen is a bonus. Thank you. Even a small gift gets used right away and I'll thank you myself.