I've stayed in Kateryna's flat with my husband for 4 nights this summer and we had a lovely stay. Kateryna was nice to wait for us for a late check in, she responded quickly to messages and she gave us a lot of tips. The flat looks better in real life than in the photos and the room itself is bigger than it looks. It was extremely close to the metro station and supermarkets. We've felt very comfortable and air conditioning was great after a long day of walking in the sun. We will definitely be staying in Kateryna's flat if we come back to Vienna and I highly recommend it to anybody looking for a comfy stay.