ROSARIO RESORT & SPA is located on 30 acres of waterfront on beautiful Orcas Island in Washington State’s San Juan Islands. T ... his charming Northwest escape is located approximately 80 miles north of Seattle and features 104 guest rooms with scenic water and mountain views. Rosario was originally built as a private residence in 1909 by former Seattle mayor Robert Moran, and is now listed on the National Register of Historic Places. read more