A room near the San Jose Cancer Centre for a family from a village four hours away

My sister Emilia has been accepted for treatment at the San Jose Cancer Centre in San Jose, starting on Sunday in January. We live 442 km away in a village four hours away, 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: Emilia and me. We can contribute $170 a week and cook for the household if you'd like. Emilia 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.