The location of your accommodation during a short city break is so important, and you could not do better then staying in Viviana’s apartment in Milan. You also benefit from having a priceless little balcony overlooking the very popular area of Navigli (don’t worry about noise, once the doors are shut you won’t hear a thing).
Super close to the very easy to use metro system, but also a close walk to the centre of Milan, so don’t hesitate, you won’t regret it.