Jo&Joe offers you a very comfortable stay at a central location in Vienna. It's very clean and new. One thing I will say, though, is that it didn't turn out to be quite the meeting spot of travelers I had expected. I basically only got to know one of my roommates. I feel like that might be down to how the hostel is relatively big and people may be spread a bit thin.
All in all, it was a nice stay, affordable and comfortable.