Hi.
I've been there 2 times. I stayed in this hotel.
http://www.akasakahotel.com.br/
Sao Paulo is known for its high crime rate but this does not really applies to this part of the town.
The best thing of this hotel is that it is in front of liberdade's metro station. I'm not sure what you mean with sento. If meant "centro" that is the portuguese word for downtown.
If you take the train in liberdade station you can reach the "Av Paulista" in about ~15 minutes. Taking a taxi will pobably take longer.
The main streen of Liberdad is not "Av Liberdade". It is "Rua Galvao Bueno". "Av Liberdade" is where the cars are. "Rua Galvao Bueno" is where the japanese, korean and chinese stores are.
If you like IGO (囲碁), I recommend traveling to "Ana Rosa" (10 mins by train), visit nihon kiin Brasil and send my regards to Yoshitake sensei. Ah, pretty much everyone in nihon kiin will speak better japanese than portuguese.
Ah, here is the relevant google map:
http://maps.google.com/maps?hl=ja&client...sults&cd=1
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Ah, Londrina is about ~1h by plane from Sao Paulo. It's not really close.
Liberdade is a completely different place. Some of the stores there have staff that can't even speak portuguese.
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Btw, if you are really staying in Liberdade, ask to the hotel staff for the "Nandemoya" restaurant.
It is like a tipical brazilian restaurant (style of service), but with japanese food. That is, food is very cheap but still delicious.
Edited: 2009-02-13, 3:38 pm