Visiting Sao Paolo next weekend... (São Paulo)

Hi guys.. I'm on a long-weekend visit to Sao Paolo from Sept 10, on a world trip taking in South America and Australia (both home countries) and wondered if anyone would like to meet up for a coffee around town and get a few tips.. I'm from the Cologne, Germany community and it'll be my first time in Brazil. Have a couple of contacts there but don't really know how busy they'll be.. I'll be at some hostel in Town called Casa Club Hostel Bar in Vila Madalena, which I believe is quite central.. so if anyone's around just drop me a line, would love to meet you...looks like a fun community there...
cheers
Lewis