Mail receiving or Virtual Address in Rio?

Hello,

I'm interested in organizing a mailbox at a company like Postnet - which has plenty of places in Sao Paulo, but not Rio.

Just to receive mail or packages, so I don't have to worry about being home when the mailman comes, etc. Can anyone recommend a company that would offer something like that in Rio?

I am looking into a box at a local post office, but I would prefer to go with a private company if possible. Courier companies usually need a street address anyway when delivering (not a PO box).

I wonder if anyone has any suggestions?

Thanks

Ben
B