In terms of the room itself, you get what you pay for, but Marco is such a great host that it's a real pleasure to stay in his apartment.
Marco picked me up from the airport and dropped me off again when I left, all the way telling me about the city and pointing out interesting things and giving recommendations of where to visit. He gave me a bigger room than the one I booked at no extra cost, because the smaller room was not cleaned. In his apartment he has lots of maps and tourist info, and also everything you could need for your stay. He has thought of everything; you can help yourself to snacks and croissants, and borrow bikes, toiletries, umbrellas, games and even he has lots of shoes and jackets in case you want to visit Etna.
The apartment is in a very old building, the rooms are traditional Sicilian style with high ceilings which is really nice. Though this does mean that it is quite dated, as is most everything inside, such as furniture and even bedding and towels.
If you're on holiday and looking for a bit of luxury this isn't the place for you. But if you're on a budget and need somewhere simple, and appreciate a host who is kind, helpful and facilitating, then I recommend staying with Marco. :)