Great weekend with a great welcome from Carina. They are great hosts, we felt like at home. It was great. The apartment is very clean and perfect for 2 people, also for 3 people is enough space. We got many good information and insights for Vienna from them.
Just a 1 minute walk to the next subway and very closed to Naschmarkt.
And: Vienna is a great place and city, especially in spring time :-)