Ross designed an urban place of high environmental value and landscape , turning `` La Posada '' into a hotel ( Great Hotel Pichilemu , later Hotel Ross , or Ross Hotel ) , and building a casino , embankments , stone walls , a balcony facing the beach . The park is located on AgustÃ n Ross Avenue , in front of Ross Casino . The hotel was originally named Gran Hotel Pichilemu ( Great Hotel Pichilemu ) .