Where can I stay super cheap in Bogota, Colombia?

Hi. I'm in a long distance Relationship and wish to see my sweetheart for Xmas but I (and he) are low on funds. I can't stay with him because a problem with his mother (whom he lives with) so that is out of the question. I just need a safe and clean place with at least a bed for about a month (12/12-01/11~ish). Like an extended stay hotel/motel/ or whatever I'm not picky. Please help!