Firstly, following our travel delays, the host's father came back to check us in which was great. Upon arrival he was courteous and helped with a bag.
The apartment is spacious, however not very clean. The bed linen was fresh and so were the towels. There is a lot of limescale, the place needs to be cleaned if you're charging a cleaning fee. The bed is comfortable and there are lots of books to read, and a park around the corner which was nice. Porta Garibaldi station is close by which is great.
Problematic: The toilet has difficulties with the flush, it doesn't refill as it should. It was taking about 6 hours to refill, not good if there's more than one guest. Ale (the host's father) came to address the situation, the refill time was improved to about an hour after he did something to the flap apparently. AirBnb threw us €14 as compensation so I'm going to buy my own apartment nearby...
Noise: We stayed for a few days, including the weekend. There's a nice amount of commotion on Corso Como with the restaurants, if you stay in this area you have to expect that Italians make noise and it's a busy street. We used ear plugs for sleeping and it was fine, so I think the noise isn't a problem if you come prepared.
The sliding doors that open up on the Corso Como side of the flat are falling apart, and there is scaffolding holding up bits and pieces of ceiling on the staircase that leads down to the ground level.