We really enjoyed our stay at Gabriella's apartment, and in Scicli. It's a wonderful town, smaller and more approachable than its neighbors Ragusa and Modica and packed with interest.
The apartment is walkable from the square where you will need to leave your car if you drive, but it's reasonably steep. One of the suggested Google Maps routes to the square will result in a tight alleyway which could be hard to negotiate if the car is anything larger than a small model.
Parking is tight in the non-costing spaces but there are a number of other squares that may have vacancies.
Overall, we really enjoyed our stay and the convenience of being so close to the center of town.