For €20 a night it's definitely well worth it, they even gave me a coupon for free beer. Bar is great and the common room is really quite cozy.
Other than the shower being a bit finicky to use, and the toilets to be a little in need of new seats, I have no complaints over the 2 nights I stayed there.
The staff were friendly and almost all spoke both German and English.
8/10 Would stay there again.