Rosanna’s place is cozy and bright. It is a fourth floor walk up with a small elevator but you will need to climb some stairs to get to the elevator and then again to get all the way to the fourth floor (spiral staircase).
The building is older and has a lot of construction going on, so if you have dust or mold allergies this might not work for you. It is a charming building and is well located in a good neighborhood.
The apartment itself is very cute, the bathroom is tiny, so be prepared for that. In the summer it can get quite warm, though there are four windows to open, and if you do, there is some street noise. Good WiFi and easy key pick up. Overall, I quite enjoyed my stay with Rosanna’s place and would recommend it to others visiting in Vienna!