Mariella's Milan flat was perfect for us - three far-flung friends meeting up for a long-overdue reunion. The space is bright, cheery, clean, comfortable, and stylish. Anything you'd likely want to see is within walking distance (about 20 minutes to il Duomo, for instance). The access to Netflix was definitely appreciated after long days on our feet. Mariella herself is very warm and welcoming. Highly recommended!
PS For a break from Italian food, try the Russian restaurant around the corner. Oh, and Knam downstairs is a must!