Spanish Classes in San Donato or Milan?

Hello. I have a level 2 diploma in Spanish, but have not spoken Spanish for over 2 years now. I need to improve my Spanish skill very rapidly at this time. Can anyone connect me to a Spanish language school/teacher where I could enroll into a one or two weeks intensive Spanish course, full time (like 4 to 8 hrs daily)?
I do not need a certificate, so even a private individual who is a native Spanish speaker (preferably from South America, because I studied South American Spanish earlier) would be OK. I'm very flexible with the time and locations, so please tell me what works for you and we could reach an agreement very fast.
Thanks in advance for your help,
Sam.