We've stayed in Airbnb's from Vietnam to Greece, and Graziemaria is the best host we've had. She is passionate about Milazzo and has a lot of information about the area. The apartment is sparkling clean and has a number of thoughtful touches such as providing some breakfast foods, bottled water in the fridge, and a selection of teas.
The apartment itself is larger than it appears in the pictures. The bedrooms, living room and kitchen/dining are very spacious. The apartment is up one flight of stairs, but there is also a small elevator. There is A/C in the living room and one of the two bedrooms.
The apartment is very centrally located. The port for ships to the islands is about 1 block away. The beaches on the west side of Milazzo are a short walk. The hilltop fortress is further away.
The streets in Milazzo are pretty narrow with a lot of one way streets. Street parking is difficult to find. GraziaMaria recommended a paid parking garage 1 block away that was great.
Our stay in Milazzo was short, but I'd love to come back to GraziaMaria's place and spend more time.