For the price and location, this is a dream. Very cheap, only 2 stops on the metro away from T-centralen? What's the catch??
Well, it is what you pay for. The room advertises a large bed, but it's really two beds set next to each other, and each has about 3 different thin mattresses stacked atop (again, separated. not one large mattress across both beds, 3 layers of divided bed), so an average night of sleeping might see you fall between the beds.
Waking up was also surprisingly difficult with no window in the room. And I have lived in Sweden for years and am quite used to the winters of limited light. I found myself struggling to follow my alarm's call to wake at 9am.
But, besides these things, the price is low and the location is good and if you really just want a place to throw your things while you spend all day out in the city, then it's a good place.