Nice apartment in a great area with easy access to the rest of Milan.
The tube is a 10-minute walk and there is also a tram right outside. You can be at the Duomo as quickly as 15 minutes using the train, and Navigli in 15-20 also using the tram. You can also walk everywhere from here, we walked to the Duomo and it was just over 20 minutes so this would be good on a nice day.
The apartment itself is a studio with private access and a private bathroom. Everything you need is provided - Kettle, coffee machine, towels, sheets etc.
The area of Porta Romana (where the apartment is located) is also very nice and has plenty to offer including good restaurants and even a bar/nightclub just around the corner which was amazingly cheap and good!