Dear Rohan,

Thank-you for all your extended support and cooperation for taking care during tough times.

I am Dipankar Gaurkar, who meet with an bike accident 2 weeks earlier. I would like to express my gratitude and affection for your kind support and care taking during the time in hospital.
After being involved in an accident, you were looked after by a person you did not know before. Write a special thank you letter to express your gratitude.  In your letter:  Introduce yourself and let him/her know why you are writing  Express your appreciation  And offer him/ her to visit your home with this family.