I had 3 significant nights in Jo&Joe hostel to the point where I regret not extending my stay in Vienna, I LOVED the place, especially as a solo traveller, met a couple of wonderful women there, had delicious food, the staff are byound amazing, they know how to be friendly and casual yet professional and practical.
The only problem I had was with my bed, it wasn't comfortable, the pillow is cheap and the sheets are too thin.
Other than that, omg I'd recommend this place to everyone!