Antonio's place is fantastic.
The apartment is spacious and clean, there is everything needed to make the stay comfortable and efficient: the washer & dishwasher help quickly tidy up and have more time to enjoy the city. Additionally, there's a great desk area in the bedroom to work, the shower/hot water works perfectly -not always the case in Italy!-, and the heating is top notch. Regarding transportation, the metro M1 is one block away and takes you to the Duomo in 15 minutes, and Pta Venezia (suburban lines) in 5 min, making commuting a breeze.
Antonio was incredibly helpful and provided breakfast items for the first morning in the apartment, which was greatly appreciated. However, there are multiple options for groceries around (Pam & Simply less than 5 blocks away), so stocking up the huge fridge was no issue at all.
Overall, this is a practical option for longer stays in "real" Milan, and a great base to explore the city. We highly recommend it!