You can take a bus from Punta Arenas airport to Puerto Natales (Bus-Sur or Buses Fernández). The trip takes 3 hours and the buses drop you off at the bus station. From here, walk through España Ave. and turn left on Santiago Bueras Ave. Keep walking until you see Miraflores street and turn right. Go straight ahead for 5 blocks until you get to Eleuterio Ramírez street, cross the street and our hostel is on the right.