One of my favorite historical building from Milano, 

Giacomo ristorante, bistrot... They are all located on the same street, Via Pasquale Sottocorno, but the rosticceria is the more, let's say, "easy-going" (and the cheapest) of the three. It's a good place for lunch and dinner - ask for a table at the "giardino interno".

Charming place where to find books, wine, music, exhibitions and talks. My favourite bit is the lovely little backyard.

I consider e/c natural wine shop a hidden treasure in Milan. Inside a building with an "Emergency" (that is actually an ONG) plaque outside, the first thing one might think is that is a hospital. Once passing the wall, there's a cute internal square, with Basilica di Sant'Eustorgio view. You can sit both inside or outside, which a strongly recommend for spring and summer days. A nice place for just passing by to grab a bottle of wine and drink it at home, having a glass of wine (they have many options) or enjoying a relaxed evening.

Fancy restaurant for special occasions. Wonderful service in a beautiful location.