I posted this in another thread, but a good find for a Parilla in Palermo is La Gran Hollywood. It is on the corner of Bonpland and Guatemala. Bife de Lomo and fries, big enough portions for two people will set you back about $8 or $9 US dollars as of 2 weeks ago.

We stayed at a nice, small hotel for US$40.00 on the corner of 9 de Julio and Moreno called the Hotel San Roman.

http://hotelsanroman.com.ar/