Riverside lodge is the perfect place to stay, specially because it is very well located in Kreuzberg and also it is a quiet and small place, perfect for travelers that are on their own. Enrico is very kind and helpful, he knows a lot about Berlin. (:
Cheers is an excellent hostel, breakfast is very good and staff are very kind and helpful. The only thing I would add is to lock the room doors so the guest has a key of the room to improve security and privacy.
Wombasts hostel its a good place, it works perfectly but sometimes the bar area can be a little bit loud. Also it is a very big hostel so sometimes it can be a bit crowded
Residenza Santa Croce is a good place, but it would be nice to have a common area to share with the rest of the guests. Also decoration is a litlle bit poor. Please let know the guests they will have to walk a long way through the stairs to get into the hostel. And please put wifi.
Circus is a very good hostel, specially for the facilities and the location right next to the Underground station.
The bar was really fun, you can meet people all over the world