Steel House is a decent choice, if you want something rather modern/new in Copenhagen city center.
-cheap, located in the center close to vesterport Station, friendly check-in staff, rather new/modern, nice ammenitites such as cinema, games (shuffle board, football, pinball, video games), pool and snooker-table.
-works well just for sleeping the night, not for staying in the room as such. The room I stayed at had only a big bed, a tv and a toilet/shower - nothing more. No table, chair or space to "be" in the room, so it is ONLY for the ones that literally only need to sleep the night and not relax in the room (the hotel might have other type of rooms with more space, I dont know).
-some noise from other ooms/thin walls
-automatic light in the bathroom which is not nice if you need to "go" during the night (but I guess all the youngsters booking Steel House do not have that problem :)More
- Free Wifi