Excellent and extremely spacious studio right next to Austria Center Vienna - highly recommended if you're attending an event there. I had a 6 min walk to an underground station (Vienna city center is reachable in ~10 minutes once you're at the station). There is a supermarket and cosmetics store within 3-4 min walk. The apartment is fully outfitted with everything I would expect from a modern flat, the WiFi is stable and fast enough and there's plenty of cutlery and crockery in the kitchen.
What really stands out is the space. Even after accounting for bed and sofa, you can do cartwheels in there if you want.