Intended to stay @ the Quinta in Arcos - but have not found them to be very welcoming or effective. Waited around for the longest time ...after having been shown a room in a semi-basement level (rather dark) for a price i was not willing to pay .... and then marched on out of there after no-one seemed to be bothered with a pilgrims on a saturday afternoon. My interactions w/ the staff there was not good - the only kind person was the 'abuela' - i suppose it was the mother of one of the owners.
I was glad that I kept on walking - to Rates, where I stayed at the albergue.
Other than the Quinta, i do not recall another accommodation in Arcos.