LINK LIST: PLACES TO STAY IN BA(BUENOS AIRES)

Here is a collection of links to housing options while visitng BA. I used some of these when I first got to BA, and some where more helpful than others.
I do not specifically endorse any of these websites, there are intended as guides: pursue at your own risk!
And the winners are, in no particular order:

AlojaArgentina.com - rentals + real estate + tourism
Myplacerealestate.com - rentals + real estate
rentalba.com.ar - rentals + tourism
bairesaparts.com - rentals + tourism
compartodepto.com - rooms for rent in Buenos Aires and beyond...
BYTargetina.com - probably the most well known agency: rentals + tourism
SoloDuenos.com - rentals by owner (reduced/no fees). NOTE: most of the joints on this list take a commission but they are generally included in the price-check!
Flatsandrooms.com - rentals + real estate + tourism + Brazil and beyond
La Nacion - Argentina's National newspaper, look in the classifieds. NOTE: this site is in Spanish!