We had a lovely time at Petrina’s place and had fun exploring Gozo. We would recommend a car to explore. Buses are ok but run hourly, and difficult to connect with other buses - often a long wait. Nothing is too far to explore on Gozo by car, but book early as they are popular, (try Mayo cars - they will deliver and very good service).
Gharb is a very quiet village/town. There are 3 reasonably priced restaurants within easy walking distance, (The Rovers roof terrace has a lovely view, but make sure you book ahead as it is popular), and a local shop which sells most things. A local craft centre is within walking distance, and worth a look, especially the glass blowing.