I can second hotel Eslava, located right on the Camino leaving downtown. Do try and give Pamplona a whirl and try not run ourt onto the Camino the next morning. It's a lovely town, nice cathedral, lunch in a sunny Spanish plaça watching the world go by, maybe pop into the Caminoteca shop on Calle de Curia 15 up by the cathedral to see if you need some equipment or have forgotten something (I somehow lost a rubber tip off one of my trekking poles on the plane over they had a replacement). Leave later, the hotel will keep your bag until you go and do stop at the Roncal albergue in Cizur Menor - a lovely albergue lovely people running it.