Valentinas little apartment is really perfect to see the city. We've been there for 3 days to see the city and the EXPO and felt at home. The small apartment is great for a couple and has everything you need (including a hairdryer!)
Valentina was so kind to expect us even though we arrived pretty late. She also prepared a lovely plan including recommendations for the quarter.
The transportation connection is great and you can even walk to the "duomo" and the city centre!