Thomas's place is indeed the best location inn Vienna. It is located right around the corner from the Opera House and is minutes away from the Albertina Museum, Haus der Musik, Hotel Sacher, Musikverein and others.
His directions for getting to his house from the airport were very detailed and easy to follow.
The apartment is quite spacious and bright and because of Thomas' request to remove your shoes inside the apartment, the slippers provided were very appreciated by my tired feet.
We would definitely stay here again!