The Bristol is one of the great traditional and elegant hotels - location, service, decor are all top class. We also heard only good reports about the restaurant from friends who live in Salzburg but on the evening we had dinner at the restaurant it was badly let down by my main courses, Tafelspitz, a very typical and traditional Viennese dish. The meat was hard and absolutely inedible. An alternative was of course offered (but I declined).
I'm sure this was a one-off but on this occassion the overall rating is 'very good' rather than 'excellent'.