Where to learn Samba? (Rio de Janeiro)

Hi there,

I'm in Rio for 7 days at the beginning of August and would love to learn samba during this time, is there anywhere someone could recommend?

I'll be free most of this time during those 7 days so very willing to do some sort of intensive course if there happens to be one?

Any suggestions or recommendations are very much appreciated.

Thank you inadvance, Haseeb