I have a friend who purchased a low income unit in the Santaluz area and really likes it. I visit pretty frequently and it seems that the neighbors have not been a problem. She is now married and would not qualify either jointly or with her income as it has gone up.
With the low amount they are paying (less than 1k 2bdrm 2bath), they are able to save up for their future house. It has worked for them. Note, I am not advocating that this program is good for the housing market, but have seen people take advantage of it.