Don't be fooled by the fact this place sits within a backpackers - if you're going with a handful of mates for a few days, you won't find a better & cheaper place.
Self-contained and centrally located, we'd happily go again. It's a 15-20min walk into Södermalm and close to the central train & bus station.
The backpackers itself also has great shared facilities which was an added bonus....although the sauna is sadly shared, not private.