We enjoyed our stay in Ottakring, Vienna. Its a little far from the center but using the CityBikes from the train station was a cheap and fast way to make the trip.
The room itself is nice and private with heaps of space for two people, however the shower being downstairs in the office can be a bit of a pain, as well as the sink and tap being down the hall. The room could probably benefit from an extra chair and a few more plates, cups, cutlery etc. That said, its really handy having a fridge and a hot plate in the room! Overall, definitely great value.