Family housing near Dhaka University Hospital: 6 weeks

My father Milon has been accepted for treatment at Dhaka University Hospital in Dhaka, starting on Saturday in October. We live 483 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 6 weeks. Two of us would stay: Milon and me. We can contribute $20 a week and cook for the household if you'd like. Milon will have some immune precautions, so a clean, smoke-free place would be ideal. A kitchen is a bonus. Thank you. Thanks for being kind about this.