Young couple look for a job as volunteers

Hello people We are a young couple from Spain and we are looking for a job as volunteers. Our idea would be work in some hostel, house or whatever during some hours, and it have been perfect to get a place to sleep and meal as salary. We are disponible in August. We are young people, responsible, efficient and most important, motívated; and we want to work during three weeks. Thank you very much for your attention. We hope to hear from you soon.