Great apartment in a great location! Metro is seconds away, but the apartment is in a more peaceful nearby street, in an old but very well renovated building.
It's also next to a small open market with a couple of Japanese restaurants and a bakery, and close to Billa and Interspar. Bettina is very friendly and fast to respond to questions!
One thing to note is that the apartment space might not be ideal for long-term stays (3+ weeks) since there is no washing machine or dining (or other) table at which to sit and work so you'd have to sit on a bar stool in the kitchen. Other than that, amazing stay with good value for money, in a beautiful city :)