Family housing near Curitiba Children's Hospital: 5 weeks

My brother Henrique has been accepted for treatment at Curitiba Children's Hospital in Curitiba, starting on Wednesday in December. We live 353 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 5 weeks. Two of us would stay: Henrique and me. We can contribute $40 a week and cook for the household if you'd like. Henrique will have some immune precautions, so a clean, smoke-free place would be ideal. A kitchen is a bonus. Thank you. I never thought I'd be the one asking, and I'm grateful for every bit of support.