First off, the bathrooms are top notch clean. There seemed to have been a problem on my 3rd day there with one of the stalls being locked, but overall it was much, much cleaner than my last hostel. Second, the downstairs was nice and roomy with lots of tables. The staff is very friendly there and helpful as well. The only knock against it would be the wifi not being available anywhere except the first floor unless you pay for premium. On top of that, the free wifi is slow so if you are planning on working or uploading anything, I would probably not recommend it.
Regarding the comfort of the room, they are very spacey rooms which is nice. The only issue is the bed. The bunk beds are squeaky and can get quite noisy which is an issue when you are coming in late at night. In addition, either the mattress or the support is weak so my mattress would cave in. If you have back problems, this is probably not the hostel for you.
Overall, great hostel and highly recommended.