I found Marco's apartments in a good location and just a few steps away from the ocean promenade and a multitude of dining venues in every direction.
If you are physically fit, you can walk to the train or bus station in 20 minutes . Once at the stations, you can get tickets for a day excursion to Noto, Taormina, Catania or other nearby destinations for very reasonable rates. If your not fit, you can catch the Hop on/off bus for 5E and it will drop you near the stations (they are adjacent to each other.)
Get your groceries and panini at 'Gustos,' located at Via Maestranza, 80.