Marc's place is well-located in a quiet neighborhood a 15-minute walk or a 5-minute drive from the train station and city historic centre. We needed to pick up his keys from a coffee shop a 2-minute walk away, which was easy. The house is on two floors; downstairs is the living/dining area and kitchen and a bathroom; upstairs there are 2 bedrooms and a bathroom. Downstairs feels airy and spacious, while the upstairs rooms are small. The double bed is very comfortable, and there were extra pillows available, which we appreciated. The bathrooms are adequate (but be warned that the shower stalls are tiny, even by Italian standards). The kitchen was well-equipped, though we didn't really do any cooking. There aren't many options for food in the neighborhood, but you can find many restaurants in the centre, which is not too far. If you are driving, be aware that the area is in a ZTL (which means only local traffic is allowed, except in the early morning and late night), so see if Marc can register your car for a ZTL pass before you arrive. If you rent a car from a location in the ZTL, it should come with a pass for the area (ask and make sure). On the plus side, there is a parking space in the courtyard.
Marc was a great host and went out of his way to make sure we were comfortable. He even did some research on where we could find truffles, which were in season at the time.