Short version: Book this place; don't hesitate.
I've stayed at many airbnbs on multiple continents. More useful, maybe, is that I've stayed at quite a few in Milan in particular. Me mentioning this isn't to boast, it's to put my review into perspective. First of all, Giuseppe easily ranks among the best airbnb hosts whom I've encountered. If I had a question, he'd respond promptly and thoroughly. Not just the basics are covered here; it's a genuinely comfortable place that's also nicely furnished. (The air conditioning is excellent which was particularly important this time!) Location-wise, it's a short walk to a good M2 metro stop as well as grocery stores and restaurants. So, please take it from an experienced traveler and a discerning American who adores Milan: Book this place; don't hesitate.