Great place in an excellent location. Daniela was very helpful while booking and organizing arrives. While we did not meet her in person, she made sure everything went smoothly with both check in and departure.
The place was very charming and spacious. I think there might have been a fold out couch so two couples or a couple and a child or two could make it work. The bed was comfortable, bathroom well appointed with a good shower. Location-wise, you could not ask for better. Just a stone's throw away from the Spanish horses, the opera and Stephanplatz. We walked everywhere! Oh, and the street was super quiet at night and had a couple nice restaurants at the end.
Definitely hoping to stay here on my next trip to Vienna.