250 Years of Change. Built in 1866, the Royal Hotel Cardiff has seen many changes to itself and its surroundings over the years, but still stands proud in the heart of Cardiff. Originally only 70 bedrooms, the first change involved adding an extension (both horizontally and vertically!) to the building which added 50 further guest bedrooms and staff quarters. A hundred years later the building as it was, was changed forever when new management decided to use the ground floor…