Yes, unfortunately. There are bedbugs (or: “punaises de lits” (French) or “chinches“ (Spanish)) again in all types of accommodation, including accommodation along the pilgrim roads to Santiago de Compostela.
We treat our albergue with an ecological detergent which is harmless to people and to the environment.
You can buy the detergent yourself to treat your personal belongings, especially your sleeping bag and luggage. There is a spray of 125 ml, specially designed for walkers and bikers. The detergent remains active for at least a week. Used weekly, the spray will be sufficient for 3 to 4 weeks. You can also use the product around your sleeping place if you suspect that the accommodation has not had preventive treatment.
In our albergue you can buy this spray, at the fixed price of 12 Euros.