Tel: 43 6628 8977
Concierge.com's insider take:
Austrians are mad for coffee, of course, and this Belle Époque institution is a fine place to join them. Try a slice of Sacher-Torte, a traditional chocolate cake filled with apricot jam, as well as the Sacher Coffee (black coffee, cream, and chocolate and peach liqueur).
Open daily 7:30 am to midnight.