Great location. Easy to walk to the 12 bus, 49 train, and U3. It was also super easy to get basic services—just down the road there's three grocery stores, an apotheke, and a bunch of restaurants & general stores & whatever else you might need. The room is nice too, the bed was comfortable & there was plenty of natural light. The white walls and high ceilings meant the room stayed lighter for longer, and I didn't have to turn on the overhead lamp until much later. Everything worked, nothing was broken or poorly assembled, and I didn't have any problems for all 3 months I was there. The internet was kind of spotty & frequently disconnected for a moment before reconnecting, which was frustrating for my video conference calls, but I was on a business trip & can't imagine this would be an issue for vacationers.
The neighbors were doing some kind of renovation for about a month during my 3-month stay & that sucked because I was working from home, but the drilling and hammering only lasted between 9h00 and 17h00 so it wasn't too difficult to avoid by walking to the library or a cafe. The apartment still gets 5 stars because it's not the owner's fault, but it did suck.
I love Vienna & Karim was so helpful during check in. 10/10 would stay here again.