there should be a "department of Elder services", or something of a similar name, at your city/town hall, that can direct you to what you're looking for. There are subsidized appartments for the elderly all over the place. I think alot of people just don't know about them, because they don't "advertise". There are a couple of places like that in my home town...very nice places, too. I don't think this comes under "section 8", though...that kind of dredges up all sorts of unsavory images. Anyway, point being that for whatever reason, this type of government subsidized housing isn't a run down pit of despair; they're nice places. I had a dear old aunt that lived in one for quite a few years before her passing. It was perfect. small, efficient, but had all the stuff that old folks need. (handicapped accessibility, good security, people to call in an emergency, etc).
the only catch is there is likely to be a waiting list for any such place, so get on any and every list asap.