First of all thank your lucky stars that they have opened that new albergue in Roncesvalles, until two years ago the old one was good for gripe -meaning influenza plus pneumonia, a cold walk in the rain, a quick cold shower and a night in the freezer which was then considered an albergue knocked out more then one pilgrim. St. Juan de Ortega, no garlic soup lots of mildew also freezing, and the monastery in Samos, more of the same as above. You should have no problem avoiding these places and your liner will be more than enough. Go for a cotton one, silk and synthetics will make you sweat and many albergues with many pilgrims means much heat as the albergues located in Najera or the so called pilgrims pavilion Os Chacotes prove all to well, both are best voided for many many reasons including excessive heat.