We have stayed in Paola's apartment for a week: everything was exactly as described on AirBnB.
The host is extremely friendly, welcoming, and patient - due to some problems in the airport we were late by more than 2 hours. Nevertheless, Paola waited for us in the apartment without any argument.
The apartment is very spacious (there were 2 of us, but even for 3 people it would be more than enough) and is really well-equipped. There are lots of necessary things in the apartment: in the kitchen - pans, pots, plates, table cloths,...; in the bathroom - a fan, soap, shampoos, manicure set,.... The TV in the living room is a large one and has a lot of channels which we enjoyed almost every evening.
The apartment in situated on the 1st floor, there is an elevator (useful for baggage, for example). My companion, who chose to sleep in the living room, said that there was quite a bit of noise from the street (the trams and the garbage machine), but I slept in the bedroom and never noticed the noise.
As for the location: we deemed it perfect. First of all, it was almost at the Corso Buenos-Aires (the main shopping street). Next, it was 2 minutes from the metro station Porta Venezia, which is also a suburb-line stop. There were also tram lines (2 just around the corner and some more in 5 minutes distance). If you prefer to walk, the route to Duomo takes around half an hour.
All in all, I highly recommend this apartment!