Gaia and Pietro's place was great - very convenient location (10 minutes walking from stazione Centrale), quiet but a few minutes away from the hustle and bustle of Porta Venezia (great for shopping, restaurants and nightlife), close to a number of excellent pasticcerie and restaurants, in a typical milanese building. A small supermarket was available right down the street too.
The apartment had everything we needed, including a great balcony. We were a group of four people, so the fact the apartment had two bedrooms meant we could wake up/go to sleep at different times without annoying anyone, as the ones who were awake could chill in the living room.
Gaia and Pietro were really easy to reach, and always available for anything we might need. Check-in and check-out were absolutely seamless. Can highly recommend this place!