The lodging details below relate mostly to a list provided to me at Ryōzenji (霊山寺 - 1). It was kindly put together by Zenkon no Kai. and contains many places you can stay for free or at very little cost. I would highly recommend tsuyado. You stay in very simple temple accommodation and in the mornings you can join the morning prayer service. There are also many zenkonyado, some of which are really great.
** Please bear in mind that the details provided below relate to my pilgrimage in Oct / Nov 2011.