Sonia's apartment is very beautiful, nice, clean and close to the metro station. There were 5 of us and the apartment is big enough for us, I think it can fit more people. Sonia and her husband welcomed us when we arrived and explained everything to us including the places to see, closest supermarket, etc. they are both very nice, helpful and friendly. Sonia's husband arranged a big taxi for us to take us to the airport.
We'll definitely stay in their place again if we have a chance to visit Milan again.