I stayed in Anna's apartment for three months. It is in a very convenient location; 20 min walk to the Duomo, or a 7 min subway ride (the subway stop is located 2 blocks from the apartment). The tram that stops outside the house goes straight to the Navigli, which are the canals, and have lots of restaurants for aperitivo. Around the apartment, there are lots of shops and restaurants.
As a host, Anna was very gracious and kind: she met me when she said she would, showed me around the neighborhood, and provided me quick assistance if I had any questions about the apartment. She could not be kinder! :) She was also very upfront about the house rules, which I appreciated.
The apartment itself is in good working order, and is pleasant to be in. I felt quite relaxed, safe, and comfortable. Anna has decorated the walls with her own beautiful artwork, there are blankets, and lots of great places to store things: closets, baskets, bookshelves. Great for a long term stay. Note that the washer and dishwasher do take a while to wash, as they are mini versions, but they get the job done! There is a laundromat close by.
The WiFi is pretty great, is comparable to what you'd get in your home: I was able to download about an 800 MB SD episode of TV in about 20 min. Never had problems with streaming. Very important for me.
I would not recommend this apartment for anyone who is physically disabled or has trouble with mobility: the tub is split level, with one portion of the floor inside being lower than the other. This made getting in and out of it a bit awkward, and I have no mobility issues. Also, the stairs to the double bed are narrow, and I was a little disappointed that there was no physical handrail; to get down the stairs I would lean my shoulder in to the wall and hold on to the "rope" on my right. I felt safe using the stairs but always made sure to stay alert. There is a couch/bed for one person downstairs if they have less physical mobility.
Also, if you're staying long term, note that there is no oven; only a range top.