Reliable adult looking for room in Los Angeles

I am a professional female aged 63. I am available to move as soon as possible and have a budget of $1000 month. Ideally, I would like to stay with a female ideally between 30 and 85 years old. I will be in Los Angeles a lot over the next year to help my sister who is receiving treatment for leukemia. When I come, I can stay anywhere from 2 weeks to a month at a time, perhaps longer, and understand if I need to book for an entire month. I do not drink, but don't mind if you do. I'm also not a smoker, but do not care as long as it isn't inside the home.