Valentina’s apartment has all you need and we had a very enjoyable 5 days in Milan staying there.
It was very clean and quiet - as it looks out into a courtyard. It is stylish and comfortable with a good bed and there is enough kitchen equipment if you want to cook.
It is in a good area - 2 supermarkets close by as are many restaurants and coffee shops. The metro is c. 8 minutes walk away and the tram is even closer. We did a lot of walking around the city - the Duomo is about 20/25 minutes walk away. The No. 9 tram takes you directly to Milan Centrale station - about a half hour journey.
We did not meet Valentina, but communication was very good and fast; and checking-in instructions were easy.
A good place to stay.