i also know that there are state run detox facilities that will cost nothing for you to detox in. while these may not be very luxurious they do get the job done.
One tip if you decide on this, might not want to go while your in intense withdrawal, being that it is state run, the chances of you waiting on a bed to free up will be high. A buddy of mine spent 6+ hours one day waiting for them to check him in. Look up on the internet as im sure you have some state run detox facilities near you.