Los Profesores, Iquique
Reasonable enough hostel, situated in the middle of things in Iquique. As with San Pedro, they have the annoying thing about paying for each night in advance; but at least here, they'll let you dump your bags in a storeroom after you've checked out. The place has a good vibe, even though I didn't particularly think the same of the city that it's in.
Rooms: cramped little dorm, but at least it's warm.
People: not too many other guests there; but the ones that they had were great fun.
Staff: quite a friendly family-run affair; I really liked the staff. They all attempted to speak English, as well.
Location: Iquique's not too big, and this place is pretty much right in the middle of it.
Food: very nice free breakfast of bread (but it's good bread, not Bolivian bread!), jam, and tea / coffee. Kitchen is not available for guest use (bit of a pain).
Internet: 2 PCs with very fast Internet (really, it was quite impressive), available for USD$1 per day, unlimited use.
Hot water: apparently there was one hot shower; but the one I found was stone cold.