Is Silvana the best host ever ? Maybe ... She was very helpful with directions, at first, and then she gave me good advice as to where to eat in her neighborhood, etc. She was also very welcoming, and available to chat, either in english or in italian.
As for her apartment, it is super well located, very close to the center (less than half an hour if you walk), and easy to get to from Malpensa or Stazione Centrale. It is beautiful, and the room is quiet and well decorated. I had a great time, there !