I spent a couple of nights in Giorgio's flat, and thought it was an excellent place to stay.
The room itself was spacious, with nice new furniture, and a good bathroom. All was very clean.
The rest of the flat was also very nice - the communal kitchen is very useful. With use of utensils and the fridge, which was good. And there's a lovely little terrace - a great spot for breakfast in the sunshine.
The location is also great - close to the train station, so easy on arrival (but far enough away to not be noisy or too busy). And also close to the city centre - it's a very short stroll to the Duomo and all the sights
Giorgio was very helpful - both in terms of communication before my visit, and also in being flexible when i realised I would be arriving earlier than expected.
Overall it's a great place to stay - definitely recommend!