Hostel Rock (Buenos Aires): The Rock Hostel Km0 was built as a 19th century lodge set in the heart of one of the top cosmopolitan destinations in Argentina, and South America. The building was constructed in 1890 and features a huge private rooftop terrace, wide rooms, tall ceilings, and relaxed common areas. The space was newly renovated in 2012 to be the best and ROCKingest hostel in the city. Our goal is to provide you with a unique and exciting homebase for your Argentine experience as you Rock Buenos Aires.