It looks like you’re asking about something related to "do and co Vienna" and perhaps its presence or details in Vienna. I don’t have enough context yet to give a precise answer. I can help with a few common possibilities:

• If you’re asking what DO & CO is in Vienna: DO & CO is a hospitality group based in Austria known for its airline catering, international event catering, and upscale restaurants and hotels. In Vienna, they operate the DO & CO Hotel Vienna and the restaurant on Stephansplatz, among other venues. [DO & CO ist eine österreichische Gastgewerbegruppe, die Flugküche, internationale Veranstaltungsveranstaltungen sowie Restaurants und Hotels betreibt. In Wien betreiben sie das DO & CO Hotel Vienna und das Restaurant am Stephansplatz.](javascript:void(0))
• If you want location specifics: The DO & CO Hotel Vienna is centrally located opposite St. Stephen’s Cathedral in the Haas-Haus building, close to Graben and Kärntner Strasse, with connections to major Vienna sights and shopping. [Das DO & CO Hotel Wien liegt zentral gegenüber dem Stephansdom im Haas-Haus, nahe Graben und Kärntner Strasse, mit guter Anbindung an Wien Sehenswürdigkeiten und Einkaufsmöglichkeiten.](javascript:void(0))
• If you’re interested in visiting details (rooms, dining, hours): The hotel offers 43 rooms and suites, with dining options including DO & CO Restaurant Stephansplatz on the top floors of the Haas-Haus, offering views of the cathedral. [Das Hotel bietet 43 Zimmer und Suiten, mit Speiseoptionen im DO & CO Restaurant Stephansplatz im obersten Stock des Haas-Hauses mit Blick auf den Dom.](javascript:void(0))
• If you meant something else (history, ownership, current news): Please share a bit more detail about what you want to know (e.g., exact venue, historic info, booking questions, or recent news), and I’ll tailor the information.

If you confirm your exact goal (e.g., “location and hours for DO & CO Hotel Vienna,” “restaurant Stephansplatz hours,” or “what is DO & CO in Vienna”), provide that and I’ll give a precise, concise answer.