We didn't meet Thomas in person, because he was travelling, but he made everything to make us feel welcomed.
The apartment is really great.

It is clean, spacious and perfectly located.

It's 1 minute walk to the busy Kartner Strasse, however, in the street we felt almost locals.
Many great restaurants and cafes in the area.
Most major attractions of Vienna are within walking distance, and the closest metro station is within 3 minutes walk.

I would highly recommend this apartment to everyone who comes to Vienna.