I will soon be a widow with no family or potential caregiver in case I get sick. What are my options?

I am 63 years old and in good health. However, as I age, I realize that there will be circumstances where I will need care. My spouse is terminally ill. My house is paid off and I will have a comfortable amount of liquid revenue to support myself as long as I am healthy. I would like to find an independent living facility which would offer care should my health decline or I become too ill to take care of myself. Do you have any suggestions for a facility that offers independent living and elder care if it is needed? What is an average price for such a facility and where are they located in Chester or Lancaster County, Pennsylvania?