With a stay at CheckVienna - Apartment Steingasse in Vienna (Landstrasse), you'll be convenient to Swiss Garden and Vienna State Opera With a stay at CheckVienna - Apartment Steingasse in Vienna (Landstrasse), you'll be convenient to Swiss Garden and Vienna State Opera. This apartment is within close proximity of Belvedere and Heeresgeschichtliches Museum.Rooms Make yourself at home in one of the guestrooms featuring microwaves. Complimentary wireless Internet access is available to keep you connected.