Massimo's place is not a huge appartment but is big enough to accommodate five people, bearing in mind that you'll just sleep there.
We had a problem with the electricity but Massimo came as soon as possible to fix it :)
Everything was fine except the air conditioner in the sitting-room. The days we stayed in Italy were very hot and the device he had at his place wasn't very powerful.
On the other hand the location is great, you can walk to the centre in around 15 min.
I recommend it if you look for an affordable and central place to sleep.