If you guys (columbia admits) can't find housing or are interested in safer housing in the 90's on the west side, I have a friend who owns brownstones and always rents them out to Columbia students.
Price range: Super small studio (shared bathroom) approx. $800-$900, studio with bathroom $1,000 to $1,100.
It's a great area right by Riverside Park, only two train stops from Columbia. The blocks have private security guards.