My site for the trains is now defunct so cannot help you there. Generally on the Mitre lines because of renovation work you need to see the timetables as guidelines.If it helps the 168 bus goes there from Palermo .It is a longish ride but you get there and if you are heading to the restaurants strip where there is Kansas etc it takes you right in front of their doors . Sorry I can´t be of more help. If you need to check the route of the 168 www.xcolectivo.com.ar or omnilineas.com.ar are good sites.