Me and my boyfriend stayed for five days, it was really nice. Simone welcomed us perfectly, explained a bit about Milano and all. The apartment is small but cosy, and very tiny windows, which is nice when it's 35 degrees ! Hopefully the air conditioned worked well :)
Also the apartment is super well situated, just next to Garibaldi station, where you can grab metro and trains (also to go to Malpensa airport), and there is the best ice cream shop just down the street.
I could recommand for a short stay without hesitation :)