This is a magical shelter. It is located in the same house where lived the Saint Domingo de la Calzada, who performed many miracles and helped the pilgrims to Santiago constructing bridges along the rivers and paths (calzada means path in Spanish).
The shelter is always open. First you have to meet on the ground floor the Prior of the Cofradia (Brotherhood) to show the Credencial del Peregrino to sleep there for free (It is custom to leave a donation).
The dormitory is on the first floor, dormitory like, very pleasant, and with a huge kitchen where you can cook your dinner and make friendship with other pilgrims.
Do not miss the church, just next door.
