Me and my girlfriend had an absolutely amazing stay at Martina's apartment. It's located very good. A 15 walk from the Duomo and next to a very cosy square with lot's of REALLY great restaurants. It's also close to the Navigli neighbourhood which is great to visit in the evening. The apartment itself is very cozy and well decorated. You feel at home right away. The room itself is great. Clean, a good bed and with lots of natural light. The only thing is that there is a tram stop nearby, so you need to close the windows at night.
Martina is a really great host, the communication with her was very clear and she gave us all the info we needed. She also gave us a small welcome kit which was really kind. Her roommate is super sweet and made us feel at home. When we came back in the evening, we had some good talks with her and she is just an amazing person. She also respects your privacy.
We had an amazing time, and we highly recommend staying here.